Answer:
65 kPa
Explanation:
Step 1: Given data
Initial pressure (P₁): 73 kPaInitial volume (V₁): 350 mLInitial temperature (T₁): 308 KFinal pressure (P₂): ?Final volume (V₂): 425 mLFinal temperature (T₂): 333 KStep 2: Calculate the final pressure of the air sample
If we assume an ideal gas behavior, we can calculate the final pressure of the air sample using the combined gas law.
P₁ × V₁/T₁ = P₂ × V₂/T₂
P₂ = P₁ × V₁ × T₂/T₁ × V₂
P₂ = 73 kPa × 350 mL × 333 K/308 K × 425 mL
P₂ = 65 kPa
Student places the ends of the wires The piece of iron shown in the picture which Physical property of iron is being tested in this picture
A. Thermal conductivity
B. Ductility
C. Electrical conductivity
D. Magnetism
Answer: C
Explanation:
Electrical conductivity
Sonya is studying a nonmetal element. She learns that the element is like other elements in its group because it can bond to form a salt or an acid. She also learns that the element is the most reactive element in its group. Which element is Sonya most likely studying?
-----
sulfur (S)
neon (Ne)
fluorine (F)
iodine (I)
Answer:
I don't know much about chemistry but fluorine us the most reactive halogen and element
why saturated fatty acid can’t create kink ?
What are two ways to make a sugar cube dissolves faster in water
A. Chill the water after adding the sugar cube
B. Add Several sugar cubed instead of water
C. Warm the water before adding the sugar cube
D. Break The sugar cube in a smaller pieces
Answer:
c.warm water before adding the sugar cube
Answer:
C.Warm the warm the water before adding the sugar cube D. Break the sugar cube into smaller pieces
Explanation:
Heating. Speeds up particles causing them to bump and break, further exposing them to the solvent.
Increasing surface area. By crushing or breaking the solid, you are exposing it to more contact with the solute.
What happens in a chemical reaction?
a. Atoms are destroyed.
b. Atoms are created.
c. Molecules are created.
d. Atoms are rearranged.
Please select the best answer from the choices provided
A
B
С
D
Pls help please :((
Answer:
During the reaction, chemical bonds break in the reactants and new chemical bonds form in the products.
Answer:
d. Atoms are rearranged.
Explanation:
How many grams of Fe can be produced when 6.50 g of Fe2O3 reacts?
Answer:
Mass of Fe produced = 4.468 g
Explanation:
Given data:
Mass of Fe produced = ?
Mass of Fe₂O₃ react = 6.50 g
Solution:
Chemical equation:
2Fe₂O₃ → 4Fe + 3O₂
Number of moles of Fe₂O₃ ;
Number of moles = mass/molar mass
Number of moles = 6.50 g/159.69 g/mol
Number of moles = 0.04 mol
Now we will compare the moles of iron and ironoxide.
Fe₂O₃ : Fe
2 : 4
0.04 : 4/2×0.04 = 0.08 mol
Mass of iron produced:
Mass = number of moles × molar mass
Mass = 0.08 mol × 55.85 g/mol
Mass = 4.468 g
What element has 2 occupied principals of energy levels
Help?
What happens in the redox reaction below? Select all that apply.
Na + F + NaF
A- Fluorine loses an electron.
B- Sodium loses an electron.
C- Sodium gains an electron.
D- Fluorine gains an electron.
E- Sodium is oxidized.
How many grams of heptane are needed to completely react with 106 g of O2?
Answer:
21.9g
Explanation:
The balanced reaction for the combustion of heptane is;
C7H16 + 11 O2 ------> 7 CO2 + 8 H2O
from the balanced reaction,
1 mole of heptane = 11 moles of O2
converting to mass
100g of Heptane = 484g of O2
xg of Heptane = 106g of O2
x = 106×100/484
x = 21.9g
Therefore, 21.9g of heptane is needed to completely react with 106 g of O2
please don't forget to mark brainliest if helpful
What type of compound is disulfur dichloride?
a. organic compound
b. acid (ionic compound)
c. covalent compound
d. ionic compound
Answer:
Covalent compound
Explanation:
It is formed by covalent bonds, in which the atoms share a pair of valence electrons
Describe how simple distillation is used to separate water from an aqueous solution of sodium
sulfate.
Answer:
hbyiy
Explanation:
A mystery element "X” has two stable isotopes X-50 which occurs 40% of the time
and X-60 which occurs 60% of the time. What is the average mass of element "X"?
A-50 amu
B-54 amu
C-56 amu
D-60 amu
Answer:
probaly C
Explanation:
I'm not sure on this one...
What is some of the evidence used by Galileo to support Copernicus’s model and disprove Aristotle and Ptolemy’s?
Each planet spins in an epicycle.
Planets appear to move backward.
Jupiter has moons orbiting it.
The religious and cultural beliefs supported this model.
Answer:
Hey sorry if i took too long but I believe it is A
Explanation: sorry if im wrong
hope this helps
Answer:
It is A
UW
Explanation:
Pls pls pls pls pls pls help
10 The rate of the reaction between hemoglobin (Hb)
and carbon monoxide (CO) was studied at 20°C.
The following data were collected with all
concentration units in u mol/L. (A hemoglobin
concentration of 2.21 u mol/L is equal to
2.21 x 10 mol/L.)
[Hblo [CO),
Initial Rate
(u mol/L) (u mol/L) (u mol/Ls)
2.21
1.00
0.619
4.42
1.00
1.24
4.42
3.00
3.71
(a) Determine the orders of this reaction with
respect to Hb and CO.
(b) Determine the rate law.
(c) Calculate the value of the rate constant.
(d) What would be the initial rate for an
experiment with [Hb]o =3.36 u mol/L
[CO] =2.40 4 mol/L?
Answer:cookie
Explanation:
Ram has power of 550 watt.What does it mean?
Answer:
for electricity, watts as in back to the future "1.21 jigga watts"!
Explanation:
Why do we get hot when we exercise?
which two geologic events occur very slowly as a result of tectonic forces and movement.
A. Destruction of forests
B. Seafloor spreading
C. Glacier formation
D. Mountain range formation
PLZZ HELPP!!!
Answer:
mountain range formation, and seafloor spreading
Explanation:
I TOOK THE TEST!!
and it was right
how many molecules of HCI would react with 1 mol of MgO?
Answer:
C.
Explanation:
MoleculesHcl = (1 molMgO/1)(2molHCL/1molMGO)(6.02x10^23/1molHCL) = 1.204x10^24
what type of reaction is 2 Al2O3(s) → 4 Al(s) + 3 O2(g)
Answer:
Decomposition or cracking
Explanation:
Given reaction:
2Al₂SO₃ → 4Al + 3O₂
This reaction is a decomposition or cracking reaction.
In such a reaction, two or more products are formed from a single reactant; e.g;
A → B + C
The breakdown of a compound into component individual elements or other compounds falls into this type of reaction.
Which of the following can be changed in a chemical reaction?
O Type of atoms
O Type of molecules
O Coefficients
O Subscripts
whoever answers will get the branliest !
Answer:
Type of molecules
Explanation:
got it right
What are two ways to make a sugar cube dissolves faster in water
Answer:
put it in a warm water or you put it in an ordinary water
A beverage manufacturer wants to increase The solunility of carbon dioxide in its carbonated drinks as beverages produced which action will increase the solubility of CO2 gas the most
A. Decreasing the pressure on it
B. Increasing stirring
C. Decreasing its temperature
D. Increasing its temperature
Answer: C
Explanation:
If you 0.123 moles of CO2 is placed at 300.1 K and 2.91 atm pressure. Determine its volume.
show with work
Answer:
1.04 L
Explanation:
substance in which two or more atoms are bonded together.
molecule(s)
two or more atoms touching means they are connected as molecules which also make up compounds
How many grams of sodium hydroxide are present in a 250.0 ml of a 0.600M NaOH solution?
How many moles are there in 256 g of silicon
Which event is fast change that occurs as a result of plate tectonics?
A. Hurricane
B. Volcanic eruption
C. Formation of an ocean basin
D. Convection current
Answer: B. Volcanic eruption
Explanation:
A volcano is firmed when molten rocks is formed to the surface of the Earth. Volcanoes release molten rocks, ash, and gases to the Earth's surface.
Volcanoes are agents of change as the eruptions lead to the formation of new landforms and also destroy several things that they come in contact with.
Volcanic eruptions also occurs due to plate tectonics. Other events that happen due to plate tectonics also include earthquakes, and tsunamis.
Answer:B
Explanation:
List the following atoms in order of increasing electronegativity: O, AI, Ca
Answer:
CA, AI, O
Explanation:
Look at a periodic table and locate each element. Note their electronegativity levels.
Which type of macromolecule is the sugar fructose? It ends in "ose" which is a clue.
O lipid
O nucleic acid
O carbohydrate
protein
Answer:
C) Carbohydrate
Explanation:
Sugar is a carbohydate
Carbohydrate is a type of macromolecule is the sugar fructose.
What is carbohydrate?A carbohydrate is a biomolecule consisting of carbon, hydrogen and oxygen atoms. Carbohydrates, or carbs, are sugar molecules which is a main nutrient found in foods and drinks.
Your body breaks down carbohydrates into glucose that provides energy to the body so we can conclude that carbohydrate is type of macromolecule is the sugar fructose.
Learn more about macromolecules here: https://brainly.com/question/3680582
