3 years ago

Calculate the value of Delta H for the reaction CaCO3 --> CO2 + CaO from the following enthalpy changes:

Chemistry

2 answers:

stira [4]3 years ago

7 0

Explanation:

crescents discuss wentz eg

Colt1911 [192]3 years ago

4 0

Answer:

2,2,1,2

2 Ca + 2 CO2 + 1 O2 → 2 CaCO3

Explanation:

Got it right on Oddesyware!!!!

You might be interested in

Which element x or y has more protons, assume both have the same energy level?

mamaluj [8]

Which has less atomic radius

5 0

3 years ago

A completely reversible heat pump has a COP of 1.6 and a sink temperature of 300 K. Calculate (a) the temperature of the source

sesenic [268]

Answer:

(A) 800 K (B) 2.4 KW

Explanation:

We have given the COP =1.6

The sink temperature $T_L=300K$

We have to find the source temperature, that is $T_H$

(A) We know that COP of the heat pump is given by $COP=\frac{T_H}{T_H-T_L}$

So $1.6=\frac{T_H}{T_H-300}$

$1.6T_H-480=T_H$

$0.6T_H=480$

$T_H=800K$

(B) We have given the work done =1.5 KW

The rate of heat transfer is given by $Q_H=COP\times W=1.6\times 1.5=2.4KW$

5 0

3 years ago

How many protons does hydrogen have?

Nataly_w [17]

Hello there!

Hydrogen has one proton because the number of protons in an atom is equal to the atomic number of the element. S ince hydrogen's atomic number is 1, it has one proton.

I hope that's help !

4 0

3 years ago

What happens in the process of beta decay?

Andrej [43]

Answer:

A neutron transforms into a proton and an electron.

Explanation:

i took the test got an 100%

6 0

3 years ago

Can you Find the quotient of 1/4 of 3

Romashka [77]

Answer: 1/12

1/4 divided by 3/1

KCF:Keep the first fraction, Change the sign to muplication, Flip the second fraction.

1/4* 31

1*1=1

4*3=12

1/12

7 0

4 years ago