The graph shows the volume of a gaseous product formed during two trials of a reaction. A different concentration of reactant was used during each trial, whereas the other factors were kept constant.
A graph is shown with two graph lines sloping upwards. The title on the x axis is Time and the title on the y axis is Amount of Product. The graph line with a steeper slope is labeled Trial X and the other is labeled Trial Y.
Which of the following statements explains which trial has a lower concentration of the reactant? (5 points)
Trial X, because the final volume of product formed is lower than Trial Y.
Trial X, because this reaction was initially fast and later stopped completely.
Trial Y, because the reaction was initially slow and later stopped completely.
Trial Y, because the volume of product formed per unit time is lower than Trial X.
Answers
Answer:
Trial Y, because the volume of product per unit time is lower than Trial X
Explanation:
In the chemistry experimental setup, the amount of gaseous product formed by the different concentration of the trials are measured and the result is plotted on a graph
The given graph, shows;
The vertical, y-axis = The amount of product
The horizontal, x-axis = Th time of the reaction
Trial X = The graph line with a steeper slope
Trial Y = The graph line
Increase in the concentration f the reactants, increases the number of collisions, and therefore, the number of effective collisions that gives the product also increases, and the overall rate of reaction increases
A more concentrated reactants produce more product in a shorter time (yield more product in less time) than a less concentrated one, and a more concentrated reactant would have a steeper slope and therefore produce more volume of the product in less time than a less concentrated reactant, which produces a lower volume in the same time
Therefore, the trial that has a lower concentration of the reactant is Trial Y, because the volume of product per unit time is lower than Trial X.
Answer:
There ya go
Explanation:
Related Questions
Which of the following best describes an atomic number? An element's identity is defined by its atomic number; this means it represents the number of
options: A) protons plus neutrons in its nucleus.
B) electrons in the element.
C) protons in its nucleus.
D) neutrons in its nucleus.
Answers
The number of protons in a nucleus is called the atomic number and ever equals the number of electrons in orbit about that nucleus.
How do you find the atomic number?The atomic number of an atom is equal to the number of protons in the nucleus of an atom or the number of electrons in an electrically neutral atom.
Suppose in a oxygen atom, there are 8 electrons and 8 protons. Thus the atomic number of O atom = number of electrons = number of protons = 8.
Thus, option "C" is correct, protons in its nucleus.
To learn more about atomic number click here:
https://brainly.com/question/16858932
Hiii pls help me to write out the ionic equation
Answers
Answer:
STEP I
This is the balanced equation for the given reaction:-
[tex] 2KOH_{(aq)} + H_2SO_4{}_{(aq)} \rightarrow K_2SO_4{}_{(aq)} + 2H_2O_{(l)} [/tex]
STEP II
The compounds marked with (aq) are soluble ionic compounds. They must be
broken into their respective ions.
see, in the equation KOH, H2SO4, and K2SO4 are marked with (aq).
On breaking them into their respective ions :-
2KOH -> 2K+ + 2OH-H2SO4 -> 2H+ + (SO4)2-K2SO4 -> 2K+ + (SO4)2-STEP III
Rewriting these in the form of equation
[tex] \underline{\pmb{2K^+} }+ 2OH^- + 2H^+ + \pmb{\underline{{SO_4{}^{2-}}} \: \rightarrow \: \underline{\pmb{2K^+}}} + \underline{\pmb{SO_4{}^{2-}}} + 2H_2O [/tex]
STEP IV
Canceling spectator ions, the ions that appear the same on either side of the equation
(note: in the above step the ions in bold have gotten canceled.)
[tex] \boxed{ \mathfrak{ \red{ 2OH^-{}_{(aq)} + 2H^+{(aq.)} \rightarrow H_2O{}_{(l)}}}} [/tex]
This is the net ionic equation.
____________________________
[tex] \\ [/tex]
[tex]\mathfrak{\underline{\green{ Why\: KOH \:has\: been\: taken\: as\: aqueous ?}}} [/tex]
KOH has been taken as aqueous because the question informs us that we have a solution of KOH. by solution it means that KOH has been dissolved in water before use.[Alkali metal hydroxides are the only halides soluble in water ]
Calculate gram-formula mass of AlCl3, show your work.
Answers
Answer:
133.48gfm
Explanation:
element number Mass
Al 1 26.98(1)
Cl 3 35.5(3)
then add the above values
= 133.48gfm
question
question
e
What volume (in L) will a 32 g sample of butane gas, C4H10(9), occupy at a temperature of 45.0 °C and a pressure of 728
mm Hg?
Answers
Answer:
The volume of the gas is 0.015 m^3.
Explanation:
mass, m = 32 g
Temperature, T = 45 °C = 45 + 273 = 318 K
Pressure, P = 728 mm of hg = 0.728 x 13.6 x 1000 x 9.8 = 97027.84 Pa
Atomic mass = 4 x 12 + 10 x 1 = 58 g
Use the ideal gas equation
Let the volume is V.
P V = n R T
[tex]97027.8 \times V = \frac{32}{58}\times 8.31 \times 318 \\\\V = 0.015 m^3[/tex]
Explanation:
The volume of the gas occupied can be calculated by using the ideal gas equation:
[tex]PV=nRT[/tex]
where,
P=pressure of the gas in atm
V=volume of the gas in L.
n=number of moles of the gas
R=0.0821L.atm.mol-1.K-1
T=absolute temperature
To get the volume of the gas, follow the below steps:
1) Calculate the number of moles of gas:
Number of moles of butane=mass of butane given/its molecular mass
[tex]=32g/58.0g/mol\\=0.55mol[/tex]
2) Convert temperature into kelvin scale:
T=(45+273)K=318K
3)Convert pressure into atm:
760 mm Hg =1 atm
then,
728 mm Hg=
728 mm Hg x 1 atm /760 mm Hg
=0.957 atm
Substitute all these values in the ideal gas equation to get the volume:
[tex]V=\frac{nRT}{P} \\V=0.55mol x 0.0821 L.atm.mol-1.K-1 x 318K / 0.957 atm\\V=15.0L[/tex]
Answer:
The volume of butane gas is 15.0 L
If the half-life of a radioactive substances is 590 million years and you have 40 atoms of it, how many half-lives will have passed when 5 atoms remain
Answers
Answer:
3
Explanation:
Applying,
[tex]2^{n'}[/tex] = R/R'............... Equation 1
Where n' = number of halflives that have passed, R = Original atom of the substance, R' = atom of the substance left after decay.
From the question,
Given: R = 40 atoms, R' = 5 atoms
Substitute these values into equation 1
[tex]2^{n'}[/tex] = 40/5
[tex]2^{n'}[/tex] = 8
[tex]2^{n'}[/tex] = 2³
Equation the base,
n' = 3
Using the equation below, calculate how many grams of water (H2O) you have if you start with 12 grams of
hydrogen?
2 H2 + O2 → 2 H2O
Answers
Answer:
12g
Explanation:
The following equation is given in this question:
2H2 + O2 → 2H2O
According to this balanced chemical equation, 2 moles of hydrogen gas is used to produce 2 moles of water molecule.
Hence, if 12 grams of hydrogen is used, 12 × 2/2 = 24/2
= 12 grams of H2O will be produced.
the valency of sodium is one give reason
Answers
Answer:
here
Explanation:
The valency of sodium is 1 because it loses it's one valence electron to gain its octet state (state of having 8 electrons in shell) during the chemical reaction.
Please mark me as brainliest
¿Qué relación tienen los microorganismos patógenos con el cov1d
19 ?
Answers
Answer:
Lumayan poin gratis...
gw gatau lu pake bahasa apaan njink
What is pH value in simple words?
Answers
The range goes from 0 to 14, with 7 being neutral.
pH values that are less than 7 indicate acid (acidity), whereas a pH value greater than 7 indicates a base (basic).
pH is really a measure of the relative amount of free hydrogen and hydroxyl ions in the substance.
Plz Help I have One more time To retake and I can't fail it..
Answers
Answer:
D. is the answer which is copper is a conductor because it's valency can move from atom to atom.
Which equation shows how wavelength is related to velocity and frequency?
A. ? = V +f
B. 2 =
f
V
O C. 2=
D. 2 = vxf
Answers
Answer:
The correct option is the option;
[tex]\lambda = \dfrac{v}{f}[/tex]
Explanation:
The wavelength of a wave is the distance between two successive crests of the wave
Therefore, the wavelength, λ, is given by the fraction of the velocity, v, of the wave divided by the frequency, f, (the number of cycles that pass through a point) of the wave
Mathematically, we have;
[tex]The \ wavelength, \ \lambda = \dfrac{The \ wave \ velocity, \ v}{The \ wave \ frequency, \ f}[/tex]
[tex]\lambda = \dfrac{v}{f}[/tex]
Answer:
v/f
Explanation:
Below is a picture of two blocks made of different materials. Block A Block B grams grams If Block A is located on the Moon and Block B is located on Earth, which of the following is true about the two blocks?
a: they have the same density.
b: they have the same volume.
c: they have the same mass.
d: they have the same weight.
Answers
Answer:
A
Explanation:
this is because density is the mass per unit volume of an object
If Block A is located on the Moon and Block B is located on Earth, then the truth about the two blocks will be they have the same mass, and they have the same density. The correct option is a and c.
What is mass?Mass is a physical body's total amount of matter. By multiplying the object's volume and density, it can be determined.
Density, volume, mass, and weight are the four entities that are supplied. The volume and weight of the object on the moon will alter as a result of these entities. They will be different in the universe if he goes to Earth.
The location and gravitational field of an object do not affect its density or mass.
Thus, the correct options are a: they have the same density, and c. they have the same mass.
To learn more about mass, refer to the link:
https://brainly.com/question/20195594
#SPJ2
True or false, The universal gas constant, R, is . 0821 when we use mm Hg as our unit for pressure
Answers
Answer:
False
Explanation:
R = gas constant = 0.0821 atm•L/mol•K
Change the following word equation into balanced formula equation
Iron + cupric Oxide-----------Ferrous sulphate + Copper
help please
Answers
Answer:
Fe + CuO ----> FeO+ Cu
Explanation:
A word equation is a chemical equation in which the reactants and products are represented by words rather than the respective symbols of the species involved in the reaction.
Generally, when writing a balanced reaction equation, it is normal to ensure that the number of atoms of each element on the reactant side is the same as the number of atoms of the same element on the product side. This has been ensured in the reaction above.
The reaction above is possible because iron is higher than copper in the electrochemical series hence iron can displace copper from its compounds.
how much energy is required to melt 2kg of aluminium
Answers
800kj----------
name and describe four different types of chemical reactions and explain how you can predict which type might occur
Answers
Answer:
1. Combination (Synthesis) reaction
A + B → AB
2. Decomposition reaction
AB → A + B
3. Displacement reaction
A + BC → AB + C
4. Double displacement reaction
AB + CD → AD + BC
5. Combustion reaction
[tex]CH_{4} + 20_{2} → CO_{2} 2Hx_{2} O[/tex]
A combination reaction, also known as a synthesis reaction, is a reaction in which two or more substances combine to form a single new substance. Combination reactions can also be called synthesis reactions.
A decomposition reaction is a reaction in which a compound breaks down into two or more simpler substances.
A single-replacement reaction is a reaction in which one element replaces a similar element in a compound.
A double-replacement reaction is a reaction in which the positive and negative ions of two ionic compounds exchange places to form two new compounds.
A combustion reaction is a reaction in which a substance reacts with oxygen gas, releasing energy in the form of light and heat. Combustion reactions must involve O2 as one reactant. The combustion of hydrogen gas produces water vapor
Explanation: Hope this helps and good luck :))
An electrolytic cell transferred 0.10 m o l of electrons when a constant current of 2.0 A was applied. How many hours did this take?
Answers
Answer:
1.34 hr
Explanation:
From the question given above, the following data were obtained:
Number of mole of electron (e) = 0.1 mole
Current (I) = 2 A
Time (t) =?
Next, we shall determine the quantity of electricity transferred. This can be obtained as follow:
1 mole of electron = 96500 C
Therefore,
0.1 mole of electron = 0.1 × 96500
0.1 mole of electron = 9650 C
Thus, 9650 C of electricity was transferred.
Next, we shall determine the time. This can be obtained as follow:
Current (I) = 2 A
Quantity of electricity (Q) = 9650 C
Time (t) =?
Q = It
9650 = 2 × t
Divide both side by 2
t = 9650 / 2
t = 4825 s
Finally, we shall convert 4825 s to hour. This can be obtained as follow:
3600 s = 1 hr
Therefore,
4825 s = 4825 s× 1 hr / 3600 s
4825 s = 1.34 hr
Thus, the time taken is 1.34 hr
On the set of a movie, dry ice (solid carbon dioxide) is used to make the appearance of fog. After the dry ice is taken out of cold storage, it is placed on the ground. As dry ice warms, it converts from a solid directly to a gas. Gaseous carbon dioxide has a density greater than air, thus allowing it to move across the ground as if it were fog. Which statement best describes this process
Answers
Answer:
- The dry ice is cooling the ground it rests upon as heat is transferred from the ground to the dry ice.
Explanation:
The above statement correctly elaborates the process of using dry ice to develop the appearance of fog. When the dry ice is placed on the ground, the heat of the ground is transferred to the dry ice. This will result in the increase in the kinetic energy of the CO2 molecules. Thus, the solid will directly convert into gas and it will lead to the formation of gas in the air. Since CO2 possesses a higher density, it will look like fog and thus, giving the perfect shot for the fog scene.
Calculate the mass of potassium acid phthalate (HKC8H4O4) that will require about 15 mL of the approximately 0.1 M NaOH solution. Measure approximately this mass on a tared piece of weighing paper and transfer it to a clean, labeled Erlenmeyer flask. Similarly, prepare all three samples, recording the masses for each. Dissolve the KHP in about 50 mL of R.O. water and add 2 drops of phenolphthalein.
Answers
Answer:
0.31 g
Explanation:
The equation of the reaction;
HKC8H4O4(aq) + NaOH(aq) ----> Na(KC8H4O4)(aq) + H2O(l)
Number of moles of NaOH = 15/1000 L × 0.1 M
= 0.0015 moles
Since the reaction is 1:1, 0.0015 moles of KHP reacted;
Number of moles of KHP = mass of KHP reacted/molar mass of KHP
Mass of KHP = Number of moles of KHP × molar mass of KHP
Mass of KHP = 0.0015 moles × 204.22 g/mol
Mass of KHP = 0.31 g
option with explaination
Answers
Answer:
B. it's water of crystallization.
the water of crystallization, that is the number of molecules of water attached to One Copper atom gives blue color to the hydrated salt (CuSO4.5H2O)
What is a chemical reaction?
Answers
Answer:
A chemical reaction is a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products. ... A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.Explanation:
hyy can you my friend lol ,, ☺️Is FeS iron (ll) sulfide or iron (lll) sulfide?
Answers
Answer:
the valence of S is -2. For FeS to be neutral the valence of Fe used must be +2
and since Iron (II) has its valency 2, FeS will be Iron (II) Sulfide.
the covalent bond with the greatest polarity would form in which of the atom pairs below?
A. Br - Br
B. S - O
C. C - P
D. C - O
E. B - O
Answers
The covalent bond with the greatest polarity would form in this atom pair: B. S-O.
Ionic character refers to a percentage of difference between the electronegativity (polarity) of two (2) atoms that are bonded covalently.
Hence, ionic character is directly proportional to the difference between the electronegativity (polarity) of two (2) atoms that forms a covalent bond.
Furthermore, bonded atoms of chemical element that are having the greatest difference in electronegativity usually forms covalent bonds with the greatest polarity.
The electronegativity of some of the chemical element are:
Sulfur (S) = 2.58Oxygen (0) = 3.5Bromine (Br) = 2.96Carbon (Ca) = 2.55Boron (B) = 2.04Phosphorus (P) = 2.19By observation, the difference between the electronegativity (polarity) of Sulfur (S) and Oxygen (0) would form a covalent bond with the greatest polarity.
[tex]S-O=3.5-2.58=0.92[/tex]
Read more: https://brainly.com/question/18214726
Balance the equation below:
HNO3 + CaCO3 Ca(NO3)2 + H2O + CO2
Answers
Answer:
2 HNO3 + CaCO3 = Ca(NO3)2 + H2O + CO2
Explanation:
Given Equation :
[tex]HNO_3 + CaCO_3 = Ca(NO_3)_2 + H_2O + CO_2[/tex]
Balanced Equation
[tex]2 HNO_3 + CaCO_3 = Ca(NO_3)_2 + H_2O + CO_2[/tex]
help me with chemistry pls. i have no idea anything related to this subject :')
Answers
Question 24:
Answer C : Q is placed in group 13 and period 2.
Question 25:
Answer C : II and IV.
Question 26:
Answer D
Explain the charge, the location and the size of protons, and electron.
Answers
Protons are positively charged particles that are located inside the nucleus at the center of the atom. Protons have a mass of 1 amu or atomic mass unit.
Electrons are negatively charged particles found outside the nucleus. Electrons have a mass of approximately 0 amu or atomic mass unit.
hope it helps :)
please mark brainliest!!!
Question 1: Alkanes, Alkenes, and Alkynes
Complete the table by labeling each molecule an alkane, alkene, or alkyne.
Answers
Answer: The labelling of each molecule is listed below:
B.) alkyne
C.) Alkane
D.) alkyne
I.) alkene
Explanation:
In organic chemistry, if an organic compound contains atoms joined only by single covalent bonds, the compound is said to be saturated. The ALKANES are said to be saturated hydrocarbons. For example butane and hexane that is shown in option F and G respectively. If an organic compound contains carbon atoms joined by double or triple covalent bonds, the compound is said to be unsaturated. For example Octene and butyne as seen in option E and H respectively.
Furthermore, hydrocarbons possess8g a set of carbon-carbon double covalent bonds,>C=C<, in their carbon chains form the homologous series called ALKENES while those possessing a set of carbon-carbon triple covalent bond in their carbon chains form the ALKYNE series
From the questions above, a more informative formula known as the structural formula is used to represent the various organic substances. The formula indicates how the atoms are arranged within the molecule of a substance. A structural formula is usually shown as a planar for convenience and does not imply a flat molecule. It shows the actual arrangement of the atoms in space and the angles between the bonds. Therefore options C, D and I are alkane,alkyne and alkene respectively.
An organic compound has the empirical formula C2H4O. what is the compound?
a. butanoic acid
b. butanol
c. ethanoic acid
d. ethanol
Answers
Answer:
The correct answer is - butanoic acid
Explanation:
An empirical formula is the general formula or base formula that is the simplest positive integer ratio of atoms present in a compound. The empirical formula is specific to specific compounds or types of compounds.
Among the given options, the empirical formula C2H4O is butanoic acid as the molecular formula of butanoic acid is - C4H8O2 which is multiple of C2H4O. Other compounds have different than this empirical formula.
Please help!!
Chemical reactions and Nuclear reactions cause matter to change in different ways. Witch TWO statements decribe how matter changes only in nuclear reactions.
• A. The automic nuclei change.
• B. Some energy is transformed into mass.
• C. The total mass of the reactions is conserved.
• D. New elements are formed
Answers
Answer:
Answer is 2nd
Explanation:
some energy is transformed into mass
What does this chemical energy reaction describe? Water-hydrogen+oxygen
Answers
Answer:
may be you mean water= hydrogen + oxygen, this reaction describes that water is made by the combination of hydrogen and oxygen.
