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vekshin1
3 years ago
10

How do I calculate the density

Chemistry
1 answer:
a_sh-v [17]3 years ago
5 0
The equation would be p=m/v so...
A) 1.1 g/cm^3
B) .95 g/cm^3
C) 1 g/cm^3
i hope this helps!!!
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What can be said about an Endothermic reaction with a negative entropy change?The reaction isa. spontaneous at all temperatures.
Lyrx [107]

Answer:

1. d. The reaction is spontaneous in the reverse direction at all temperatures.

2. c. The reaction is spontaneous at low temperatures.

Explanation:

The spontaneity of a reaction is associated with the Gibbs free energy (ΔG). When ΔG < 0, the reaction is spontaneous. When ΔG > 0, the reaction is non-spontaneous. ΔG is related to the enthalpy (ΔH) and the entropy (ΔS) through the following expression:

ΔG = ΔH - T. ΔS  [1]

where,

T is the absolute temperature (T is always positive)

<em>1. What can be said about an Endothermic reaction with a negative entropy change?</em>

If the reaction is endothermic, ΔH > 0. Let's consider ΔS < 0. According to eq. [1], ΔG is always positive. The reaction is not spontaneous in the forward direction at any temperature. This means that the reaction is spontaneous in the reverse direction at all temperatures.

<em>2. What can be said about an Exothermic reaction with a negative entropy change?</em>

If the reaction is exothermic, ΔH < 0. Let's consider ΔS < 0. According to eq. [1], ΔG will be negative when |ΔH| > |T.ΔS|, that is, at low temperatures.

3 0
3 years ago
When heated, iron (iii) hydroxide
NeX [460]
Fe(OH)3 --> Fe2O3 + H2O

2 Fe(OH)3 --> Fe2O3 + 3H2O

I hope this helps!
8 0
3 years ago
Read 2 more answers
When filtered through a funnel into a flask, a mixture of substances X, Y and Z gets separated as below: - X stays in the funnel
alisha [4.7K]

Z is the solvent, Y is soluble in water while X is insoluble in water.

<h3>Filtration</h3>

Filtration is a method of separation of substances based on particle size. Only a particular particle size can pass through the filter. The substance that remains in the filter is the residue while the substances that passes through the filter is called the filtrate.

From the observation in the question Z is the solvent, Y is soluble in water while X is insoluble in water.

Learn more about separation of mixtures: brainly.com/question/863988

6 0
3 years ago
Will mark brainliest
leonid [27]

Answer:

1. Calcium and fluorine

Symbol Ca F

Charges +2 1−

Formula CaF

2

2. Hydrogen and sulphur

Symbol H S

Charges 1+ 2−

Formula H

2

S

3. Nitrogen and hydrogen

Symbol N H

Charges 3− 1+

Formula NH

3

4. Carbon and chlorine

Symbol C Cl

Charges 4+ 1−

Formula CCl

4

5. Sodium and oxygen

Symbol Na O

Charges 1+ 2−

Formula Na

2

O

6. Carbon and oxygen.

Symbol C O

Charges 4+ 2−

C

2

O

4

i. e.

Formula CO

2

Explanation:

here is your answer Hope you will enjoy and mark me as brainlist

thank you

6 0
3 years ago
Consider the following reaction.
Andrews [41]
The conjugate base of H2O is H2O
6 0
3 years ago
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