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Nitella [24]
1 year ago
5

A sample of X is carefully weighed and put inside a sealed calorimeter. The calorimeter is heated electrically, and the amount o

f heat added determined by monitoring the electrical current used. The temperature of X is carefully measured, and from the temperature change and the amount of heat added the value of H
may be calculated.
Is this a physical or chemical property?
Chemistry
1 answer:
mixer [17]1 year ago
8 0

The value of the heat of combustion (H) that is calculated here is a chemical property.

<h3>What is the heat of combustion?</h3>

The heat of combustion is the energy that is given up when a substance is burnt in a calorimeter. The heat of combustion is often measured by the use of a calorimeter.

Hence, the value of the heat of combustion (H) that is calculated here is a chemical property.

Learn more about heat of combustion:brainly.com/question/14317568

#SPJ1

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mass of 6.584 g. After it is heated, it has a mass of 4.194 g. What is the percentage by mass of water in the hydrate?
Bad White [126]
M₁=6.584 g
m₂=4,194 g

m(H₂O)=m₁-m₂

w(H₂O)=m(H₂O)/m₁

w(H₂O)=(m₁-m₂)/m₁

w(H₂O)=(6.584-4.194)/6.584=0.3630  (36.30%)

the percentage by mass of water in the hydrate 36.30

8 0
3 years ago
Calculate the standard cell potential of the following cell at 25°C. Sn(s) | Sn2+(aq) || Cu2+(aq) | Cu(s).
Semmy [17]

Answer:

0.48 V

Explanation:

Usually in the cell notation, the left side shows oxidation. So,

Oxidation half reaction:

Sn_{(s)}\rightarrow Sn^{2+}_{(aq)}+2e^-    E^o_{ox}=-E^o_{red}=-(-0.14\ V)=0.14\ V

Reduction half reaction:

Cu^{2+}_{(aq)}+2e^-\rightarrow Cu_{(s)}    E^o_{red}=0.34\ V

E^o_{cell}=E^o_{ox}+E^o_{red}= (0.14+0.34)\ V=0.48\ V

4 0
3 years ago
What are the branch-chain Alkanes?
snow_tiger [21]

Answer:

The top branch-chain is a Isobutane branch. And the bottom branch chain is a  Neopentane branch

7 0
3 years ago
Read 2 more answers
Please help me out with this​
d1i1m1o1n [39]
Answer
I think it’s 5
Explanation
4 0
2 years ago
What is the approximate value of the ccc bond angle in ch3ch2ch2oh
Fynjy0 [20]

Answer:

The value of the carbon bond angles are 109.5 °

Explanation:

CH3CH2CH2OH = propanol . This is an alcohol.

All bonds here are single bonds.

Single bonds are sp³- hybdridization type. To be sp3 hybridized, it has an s orbital and three p orbitals : sp³. This refers to the mixing character of one 2s-orbital and three 2p-orbitals. This will  create four hybrid orbitals with similar characteristics.

Sp3- types have angles of 109.5 ° between the carbon - atoms.

This means that the value of the carbon bond angles are 109.5 °

6 0
3 years ago
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