Answer:
B. The particles rarely touch each other.
Explanation:
The particles of gases are far apart, so they rarely touch each other. The particles of liquids can slide past each other, and the particles of solids are locked in place next to each other.
In all three states of matter, the particles
- Have a definite volume
- Are in constant motion
- Have kinetic energy
Answer:
The answer to your question is 114.7% the percent is higher than expected.
Explanation:
Data
mass of HCl = 10.5 g
molar mass of HCl = 36.5 g
mass of NaOH = 19.3 g
molar mass of NaOH = 58.5
Process
1.- Write the balanced chemical reaction
HCl + NaOH ⇒ NaCl + H₂O
2.- Calculate the theoretical yield
36.5 g of HCl -------------- 58.5 g of NaCl
10.5 g of HCl -------------- x
x = (10.5 x 58.5)/36.5
x = 16.83 g
3.- Calculate the percent yield
% yield = (19.3/16.83) x 100
% yield = 114.7
Answer:
6.9428 kg of CO2
Explanation:
1) Use Avogadro's number that states 1 mole = 6.022 x 10^23 particles. Convert 9.5 x 10^25 molecules into moles.
9.5 x 10^25 CO2 molecules
= 157.75 moles CO2
2) Convert 157.75 moles of CO2 into grams. CO2's molar mass is 44.01g.
= 6942.79g
3) Convert 6942.79 grams into kilograms (divide by 1000):
6.9428 kg
Answer:
Heating a substance causes molecules to speed up and spread slightly further apart, occupying a larger volume that results in a decrease in density. ... Hot water is less dense and will float on room-temperature water. Cold water is more dense and will sink in room-temperature water.
Explanation:
