Taking into account the definition of molecular geometry, the correct option is option d.: the bond angle of a linear molecule is 180 degrees.
In first place, molecular geometry or molecular structure is the spatial distribution of atoms around a central atom. Atoms represent regions where there is a high electron density, and are therefore considered electronic groups, regardless of the bonds they form.
That is, molecular geometry is the three-dimensional arrangement of the atoms that make up a molecule.
The molecular geometry of an element characterizes some of its physical or chemical properties, such as boiling point, viscosity, and density.
Linear molecules are molecules of the AB₂ type in which the central atom does not have lone pairs. To avoid repulsions between the binding pairs, arrange the B groups as far apart as possible. For that they must oppose each other 180 °.
In summary, linear molecular geometry describes the arrangement of different atoms with 180º bonds.
So, the correct option is option d.: the bond angle of a linear molecule is 180 degrees.
Learn more about molecular geometry with this example:
https://brainly.com/question/11298860?referrer=searchResultshttps://brainly.com/question/14203216?referrer=searchResultshttps://brainly.com/question/9965422?referrer=searchResultsWhat is one way to prevent soil erosion?
A. Plant trees
B. Plow fields
C. Spray weed killer.
D. Remove mulch.
its a plant trees
(need character limit)
what is water
a. a universal solvent
b. something you can drink
c.a liquid
Answer:
FIRST OPTION WHICH IS A: UNIVERSAL SOLVENT
Explanation:
Water is called the "universal solvent" because it is capable of dissolving more substances than any other liquid. This is important to every living thing on earth. It means that wherever water goes, either through the air, the ground, or through our bodies, it takes along valuable chemicals, minerals, and nutrients.
Answer:
according to Chemistry its A
how many mol of Mg(OH)2 are produced with 5.84 mol of Mg3N2
Answer:
https://socratic.org/questions/566a480e11ef6b5cb114ceea
A chemical reaction requires you to use 3.25 mol of sodium chloride. How many
grams of sodium chloride are needed to supply 3.25 mol of sodium chloride?
Answer:
3.25 moles of sodium chloride to grams: 189.3545 grams
Explanation:
1 moles NaCl = 58.44277 gram
Matter is anything that takes up space.Which units of measurements can you use to describe these two properties?
Answer:
Matter is anything that has mass and takes up space. Mass gives an object the property of weight and inertia (resistance to change in the motion of an object). ... If something is in a solid state of matter, it has a definite shape and volume. The volume of an object is the amount of space it occupies.
Explanation:
When a drawing of a circle made in the center of a piece of paper with a black marker gets wet, the marker bleeds, and as the water moves through the paper the ink separates into several colors.
Answer:
Chromatography
Explanation:
Chromatography is a technique for separating mixtures that involves the use of a moving liquid and filter paper. The solvent travels through the spots on the paper, taking the chemicals away in the opposite direction. If the solvent combination has been properly chosen, each of them will move at a different velocity than the others.
What makes a strong acid different from a weak acid?
Answer:
D. A strong acid dissociates more completely than a weak acid.
Explanation:
A P E X
(07.01 MC)
A potential energy diagram is shown.
70
60
Products
50
40
Potential Energy (kJ)
30
Reactants
20
10
0
Reaction Pathway
What is the activation energy of this reaction? (5 points)
Answer:
the activation energy is 65-30
35
The activation energy of this reaction is 35 kJ.
What is activation energy?Activation energy, in chemistry, the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo chemical transformation or physical transport.
The activation energy is equal to the difference between the threshold energy needed for the reaction and the average kinetic energy of all the reacting molecules.
The activation energy of a reaction is the difference in energy between the threshold energy and energy of the reactants.
Given,
The highest energy for a reaction to happen = Threshold energy = 65 kJ
Energy of the reactants = 30 kJ
Therefore, The activation energy of this reaction is 35 kJ.
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molecular formula of ammonium nitrite using cris method
Answer:
By using the criss cross method,the -1 charge of nitrate ion is shifted to ammonium ion and +1 charge of ammonium ion is shifted to nitrate ion. In this way, the final formula NH4NO3 is formed for the ammonium nitrate.
What effect does the electrostatic force have?
- Particles without charge repel each other.
- Particles of different masses repel each other.
- Particles of opposite charge repel each other.
- Particles of the same charge repel each other. (ANSWER)
D
Explanation:
Particles of the same charge repel each other
Please hurry!!!!!!!!!!
Due tomorrow
Which pair of properties describes the elements in Group 18?
F They are chemically stable and liquid at room temperature.
G They have eight valence electrons and are flammable
H They are magnetic and boil at low temperatures.
J They are gaseous at room temperature and chemically stable.
Answer:
G
Explanation:
They have eight valence electrons and are flammable
*not sure about this answer
Explanation:
the correct answer is C
hope it helps you
What is the atomic mass of sulfur (S)?
Answer:
atomic mass of sulfur is 32.06 g/mol
Explanation:
which one is unsaturated hydrocarbon?
options:
I) C3H8
2) CH4
3) C2H6
4) C2H4
pls tell the answer fast
Answer:
The correct answer is - D C2H4.
Explanation:
Saturated hydrocarbons are hydrocarbons with single covalent C-C bonds. They are known as alkanes. The general formula for these hydrocarbons is CnH2n+2
Unsaturated hydrocarbons the hydrocarbons with double or triple covalent C-C bonds. They are known as alkenes and alkynes respectively. The general formula for these hydrocarbons is CnH2n and CnHn-2
For the given options:
Option D: C2H4, is the simplest alkene with a double bond so it is an unsaturated hydrocarbon.
hii pls help me to balance chemical equations
ammonia + oxygen ------> nitrogen + water
Answer:
Explanation:
Ammonia = NH3
Oxygen = O2
When these two (2) chemical elements react together, they form two chemical compound which are nitrogen oxide and water.
NH3 + O2 -----> NO + H2O
We would balance the chemical equation like this;
NH3 + 3O2 -----> 4NO + 2H2O
Name the following bases.
Fe(OH)3
- iron(III) hydroxide
- iron(II) hydroxide
- iron hydroxide
Answer:
1
Explanation:
Ferric Hydroxide
3. 1
Fe. (OH)
Fe(OH)3
Answer:
iron(III) hydroxide
Explanation:
I just took the quiz!
Plz Help I have One more time To retake and I can't fail it..
[tex]option(a)[/tex]
Explanation:
You answer is correct as you move from left to right across a period. But, the question is asked regarding to the right to left across a period. So, as you move from right to left across a period, you can find firstly Non-metals, secondly Metalloids, and lastly Metals.
why is it important of having regular supervision of the market?
If the velocity of a body is decreased to 1/2, then K.E. of the body decreases to
Answer:
1/4th
Explanation:
KE = .5mv^2
So when we decrease the velocity by half, we end up losing three fourths of net energy due to that value being squared.
Answer:
The Kinetic Energy is reduced to 1/4 of the original K. E.
Explanation:
K. E. = 1/2 m v^2
If v becomes v/2 we have:
K E. = 1/2 m (v/2)^2
= 1/2 m v^2/4
So dividing the 2:
we get 1/2 m v^2/4 / 1/2 m v^2
= v^2/4 / v^2
= v^2 / 4v^2
= 1/4.
Balance the reaction and determine which of the following coefficients
Answer:
B. The correct ratio is 3:1:1:3
Explanation:
According to this question, the following chemical equation was given:
CH3COOH + Al(OH)3 → Al(CH3COO)3 + H2O
This equation is obviously not balanced because the number of atoms of each element on both sides of the equation is not equal or the same. To balance the equation, we make use of coefficients as follows:
3CH3COOH + Al(OH)3 → Al(CH3COO)3 + 3H2O
- There are now 6 moles of C on each side
- There are now 15 moles of H on each side
- There are now 9 moles of O on each side
- There is now 1 mole of Al on each side
The correct ratio of each compound is in the order 3:1:1:3
Which word equation best describes the following formula equation:
2HNO3 + Ca(OH)2 → Ca(NO3)2 + 2H2O?
A. Nitric acid and calcium hydroxide react to form calcium nitrate and water.
B. Two molecules of calcium nitrate react with one molecule of calcium hydroxide to form one
molecule of nitric acid and two molecules of water.
C. Two molecules of nitric water and one molecule of calcium water react to form one molecule of
nitric acid and two molecules of water.
D. Two molecules of nitric acid react with one molecule of calcium hydroxile to form one molecule
of calcium nitrate and two molecules of water.
Answer:
D
Explanation:
This is because that is the systematic name of the compounds above.
Two molecules of nitric acid react with one molecule of calcium hydroxide to form one molecule of calcium nitrate and two molecules of water. Hence, option D is correct.
What is an equation?A word equation represents a chemical reaction using the names of the substances involved.
[tex]2HNO_3 + Ca(OH)_2[/tex] → [tex]Ca(NO_3)_2 + 2H_2O[/tex]
Two molecules of nitric acid react with one molecule of calcium hydroxide to form one molecule of calcium nitrate and two molecules of water.
Hence, option D is correct.
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We mix 2.5mL of NaOH 0.5M with 2.5mL of HCl 0.5M both at 25◦C in a constant-pressure calorimeter. The heat of reaction is -40KJ/mol. Calculate the final temperature inside the calorimeter, if the solution density is 1g/mL and the specific heat of the solution is 4.184J/g ◦C.
Answer:
awawaw
Explanation:
Balance the following equations by inserting the proper coefficients.
CH4 +
O2 CO2 +
H2O
CaCl2 +
AgNO3 Ca(NO3)2 +
AgCl
C2H6O +
O2
CO2 +
H2O
Answer:
2, 2, 2, 2, 3, 2, 3
Explanation:
The coefficient of the equation (i) CH₄ + O₂ → CO₂ + H₂O are 2, 2 the coefficient of equation (ii) CaCl₂ + AgNO₃ → Ca(NO₃)₂ + AgCl are 2, 2 and the coefficient of equation (iii) C₂H₆O + O₂ → CO₂ + H₂O are 3, 2, 3.
What is Balanced Chemical Equation ?
The balanced chemical equation is the equation in which the number of atoms on the reactant side is equal to the number of atoms on the product side in an equation.
Here the given equations are
(i) CH₄ + O₂ → CO₂ + H₂O
(ii) CaCl₂ + AgNO₃ → Ca(NO₃)₂ + AgCl
(iii) C₂H₆O + O₂ → CO₂ + H₂O
Now balance the equation (i)
CH₄ + O₂ → CO₂ + H₂O
Reactant side Product Side
C = 1 C = 1
H = 4 H = 2
O = 2 O = 3
In the reactant side there are 4 H atoms and in product side there are 2 H atoms are present. So multiply by 2 in the product side to balance the H atoms.
CH₄ + O₂ → CO₂ + 2H₂O
Reactant side Product Side
C = 1 C = 1
H = 4 H = 4
O = 2 O = 4
In the reactant side there are 2 O atoms and in product side there are 4 H atoms are present. So multiply by 2 in the reactant side to balance the O atoms.
CH₄ + 2O₂ → CO₂ + 2H₂O
Reactant side Product Side
C = 1 C = 1
H = 4 H = 4
O = 4 O = 4
Here we can see that the equation is balanced. The coefficient are 2, 2.
Now balance the equation (ii)
CaCl₂ + AgNO₃ → Ca(NO₃)₂ + AgCl
Reactant side Product Side
Ca = 1 Ca = 1
Cl = 2 Cl = 1
Ag = 1 Ag = 1
N = 1 N = 2
O = 3 O = 6
In the reactant side there are 2 Cl atoms and in product side there is 1 Cl atom is present. So multiply by 2 in the product side to balance the Cl atoms.
CaCl₂ + AgNO₃ → Ca(NO₃)₂ + 2AgCl
Reactant side Product Side
Ca = 1 Ca = 1
Cl = 2 Cl = 2
Ag = 1 Ag = 2
N = 1 N = 2
O = 3 O = 6
In the reactant side there is 1 Ag atom and in product side there are 2 Ag atoms are present. So multiply by 2 in the reactant side to balance the Ag atoms.
CaCl₂ + 2AgNO₃ → Ca(NO₃)₂ + 2AgCl
Reactant side Product Side
Ca = 1 Ca = 1
Cl = 2 Cl = 2
Ag = 2 Ag = 2
N = 2 N = 2
O = 6 O = 6
Here we can see that the equation is balanced. The coefficient are 2, 2.
Now balance the equation (iii)
C₂H₆O + O₂ → CO₂ + H₂O
Reactant side Product Side
C = 2 C = 1
H = 6 H = 2
O = 3 O = 3
In the reactant side there are 2 C atoms and in product side there is 1 C atom is present. So multiply by 2 in the product side to balance the C atoms.
C₂H₆O + O₂ → 2CO₂ + H₂O
Reactant side Product Side
C = 2 C = 2
H = 6 H = 2
O = 3 O = 5
In the reactant side there are 6 H atoms and in product side there are 2 H atoms are present. So multiply by 3 in the product side to balance the H atoms.
C₂H₆O + O₂ → 2CO₂ + 3H₂O
Reactant side Product Side
C = 2 C = 2
H = 6 H = 6
O = 3 O = 7
In the reactant side there are 3 O atoms and in product side there are 7 H atoms are present. So multiply by 3 in the reactant side to balance the O atoms.
C₂H₆O + 3O₂ → 2CO₂ + 3H₂O
Reactant side Product Side
C = 2 C = 2
H = 6 H = 6
O = 7 O = 7
Here we can see that the equation is balanced. The coefficient are 3, 2, 3.
Thus, we can say that the coefficient of the equation (i) CH₄ + O₂ → CO₂ + H₂O are 2, 2 the coefficient of (ii) CaCl₂ + AgNO₃ → Ca(NO₃)₂ + AgCl are 2, 2 and the coefficient of equation (iii) C₂H₆O + O₂ → CO₂ + H₂O are 3, 2, 3.
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The characteristics of a certain gas are listed in the table.
What is the expected density of the above sample of gas?
A - 3.16 g/L
B - 1.58 g/L
C - 1.21 g/L
D - 1.03 g/L
Answer:
Option A. 3.16 g/L
Explanation:
We'll begin by calculating the molar mass of Cl₂. This can be obtained as follow:
Molar mass of Cl₂ = 2 × 35.45
= 70.9 g/mol
Finally, we shall determine the density of Cl₂. This can be obtained as follow:
Molar mass of of Cl₂ (M) = 70.9 g/mol
Pressure (P) = stp = 1 atm
Temperature (T) = stp = 273 K
Gas constant (R) = 0.0821 atm.L/Kmol
Density (D) =?
D = PM / RT
D = (1 × 70.9) / (0.0821 × 273)
D = 70.9 / 22.4133
D = 3.16 g/L
Thus, the density of the gas is 3.16 g/L.
How does peer review affect research?
A. Experimental results will be trusted by the scientific community
only if they have been peer-reviewed.
B. Experimental results will be published only before they have been
peer-reviewed.
C. An experiment will not be repeated by others if it has been peer-
reviewed.
O D. Experimental results are possible only if they have been peer-
reviewed.
Answer:
A: Experimental results will be trusted by the scientific community
only if they have been peer-reviewed.
Explanation:
It is NOT C as I have tried it, it did not work and makes no sense.
Drawing a conclusion derived from knowledge of an established principle is called deductive reasoning.
True
False
Answer:
the answer would be true
Answer:
false
Explanation:
cos the principle is established or known so it will not be a deductive or low reasoning
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.
Which of the following statements explains which trial has a lower concentration of the reactant?
A: Trial 1, because the average rate of the reaction is lower.
B: Trial 1, because this reaction lasted for a longer duration than Trial 2.
C: Trial 2, because this reaction was initially fast and later slowed down.
D: Trial 2, because the volume of product formed per unit time was higher.
The rate of reaction means how fast or slow(speed) a reaction occurs.
The correct answer is A: Trial 1, because the average rate of the reaction is lower.
The rate of reaction is the speed with which reactants are converted into products. It is also the rate at which reactants disappear and products appear. The higher the rate of reaction, the greater the amount of product formed in a reaction.
If we look at the graph, we will realize that trial 1 produces a lesser amount of product than trial 2. This implies that the average rate of the reaction in trial 1 is lower than in trial 2.
Lower average rate of reaction implies lower concentration of the reactants since the rate of reaction depends on the concentration of reactants.
Hence trial 1 has a lower concentration of reactants because the average rate of the reaction is lower.
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The correct option is option A: Trial 1, because the average rate of the reaction is lower
The average rate of reaction increases as the concentration of reactants increases;
The rate of reaction increases as the concentration of reactants increases because the number moles of the reaction particles increases resulting in increased collisions among the reacting particles followed by an increase in the number of effective collisions to form the total possible number of the product at a shorter time which shows a higher reaction rate.
The higher the reaction rate, the steeper the slope of the graph of the Amount of Products to Time produced and, from the given graph, Trial 2 has a higher average rate of reaction and given that other factors were kept constant, a higher concentration of reaction, while, Trial 1 that has a gentler slope of Amount of Product to Time has a lower concentration of the reactant, and therefore, the average rate of reaction in Trial 1, is lower
Therefore, the statement that explains which trial has a lower concentration of the reactant is option A, Trial 1, because the average rate of the reaction is lower
Find the number of moles of sodium hydroxide in 25cm3 solution of concentration 0,1 mol/dm3
Answer:
0.0025 moles
Explanation:
25cm^3 = 25/1000 dm^3
Conc = mol/dm^3
Mol = conc * dm^3
Mol = 0.1 * 25/1000
Seeds are organs within the reproductive system of plants. How is the spreading of seeds important to the survival of an organism?
A. An organism must reproduce in order to find a suitable place to live.
B. Although a single organism can survive without reproducing, organisms must reproduce in order to ensure the survival of the species.
C. Although a single organism can survive without reproducing, the organism must spread its seeds in order to protect itself from disease.
D. An organism must reproduce in order to absorb nutrients from the environment. SUBMIT
Answer:
Although a single organism can survive without reproducing, organisms must reproduce in order to ensure the survival of the species.
Catalysts help reactions happen more easily. This graph shows the energy of
a reaction without a catalyst. Which graph shows the energy of the same
reaction with a catalyst?
Answer:
D.
Explanation:
Catalysts are substances that increase the rate of a reaction i.e. make it faster. Catalysts do this by reducing the activation energy needed for a reaction to occur.
According to the image in this question, a graph showing the energy of a reaction without a catalyst is displayed. This means that a longer time will be spent. However, with a catalyst, the activation energy will reduce as seen in the image in option D.
Question:
Nearly the entire world uses the metric system for their measurements. The US is one in of three countries that does not use metric. Would you support changing school curriculum to teach the metric system as the primary measurement system in the US? Why or why not.
(It must be 3-5 sentences long please)
Answer:
I would
Explanation:
I would support the change to the metric system only because it allows children to understand smaller forms of units and measurements. Also, it will allow people in the math and science fields to broaden their knowledge of equations and formulas. Meaning that the scientist and mathematicians will be able to solve more problems in the world right now. Overall, the education system for the children of the United States would benefit from the change in the measurement system.
