4 years ago

Which ansewrd is it I think that is C OR D A B C D

Chemistry

1 answer:

Lostsunrise [7]4 years ago

8 0

It would be D Because the earth orbits the sun

You might be interested in

2H2 + O2 + 2H20

kondaur [170]

Answer:

Hello

The answer is 25gr H2O

Explanation:

50grH2×1 molH2/2 gr H2×2mol H2O/2molH2=25gr H2O

8 0

3 years ago

if a television with mass 15kg is lifted to a shelf of height 1.2m, how much gravitational potential energy is added to the tele

belka [17]

P =mgh

You have mass, g =9.8 m/s2 and height calculate the potential energy P

6 0

3 years ago

If the reaction of 9.87 moles of potassium with excess hydrobromic acid produced a 79.8% yield of hydrogen gas, what was the act

Fed [463]

Answer is: 3,94 of hydrogen gas.
Chemical reaction: 2K + 2HBr → 2KBr + H₂.
n(K) = 9,87 mol.
n(H₂) = ?.
from reaction: n(K) : n(H₂) = 2 : 1.
9,87 mol : n(H₂) = 2 : 1
n(H₂) = 4,935 mol for 100% yield of reaction
n(H₂) = 4,935 · 0,798 = 3,94 mol for 78,9 % yield of reaction.
n - amount of substance

7 0

4 years ago

The temperature of a 95.4 g piece of copper decreases from 48°C to 25°C when the copper releases - 849 J of heat. What is the sp

Vilka [71]

This is my workings. Hope am correct