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Zina [86]
3 years ago
15

He substance, cocl2, is useful as a humidity indicator because it changes from pale blue to pink as it gains water from moist ai

r. What is its name?
Chemistry
1 answer:
Anettt [7]3 years ago
5 0

Answer:

Cobalt chloride

Explanation:

It is a molecule formed of one Cobalt atom, and two Chlorine atoms.

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In a certain chemical process, water reacts with a compound, and the water is converted into another compound during the reactio
gtnhenbr [62]

Answer:

hydration reaction

Explanation:

The type of reaction would be hydration reaction.

<u>Hydration reaction generally involves a chemical reaction of water with another reactant and in which the water ends up being converted to another product entirely. </u>

A good example of hydration reaction is the reaction between alkene and water leading to the production of alcohol.

CH_2=CH_2(g)   +   H_2O(g)  ⇄  CH_3CH_2OH(g)

8 0
3 years ago
Read 2 more answers
What element has the same number of valence electrons as sulfur?
FinnZ [79.3K]
Oxygen. Is the correct answer


Oxygen has the same number of valence electrons as sulfur. An ion can be an element that gained or lost an electron.
6 0
2 years ago
How many atoms are in 0.54 moles of chromium?
Levart [38]

Answer:

3.25*10^23  atoms

5 0
2 years ago
Why are chemists interested in studying thermochemistry? a. Heat is often absorbed during reactions.b. Heat is often released du
Wittaler [7]

Answer:

a. Heat is often absorbed during reactions.

c. Heat is often released during chemical reactions.

Explanation:

Thermochemistry -

The study of thermochemistry involve the change in the amount of heat , during any physical or chemical process , is referred to as thermodynamics .

The focus of thermochemistry is on the changing amount of energy in the form of heat , on the system with respect to the surroundings .

The process like boiling , melting , sublimation , may require energy or releases energy , and hence are studied under thermochemistry .

Hence , from the given question ,

The correct options are -  a , c.

6 0
3 years ago
If you collect 1.75 L of hydrogen gas during a lab experiment when the room temperature is 23oC and the barometric pressure is 1
ziro4ka [17]

Answer:

n=0.0747mol

Explanation:

Hello,

In this case, since we can consider hydrogen gas as an ideal gas, we check the volume-pressure-temperature-mole relationship by using the ideal gas equation:

PV=nRT

Whereas we are asked to compute the moles given the temperature in Kelvins, thr pressure in atm and volume in L as shown below:

n=\frac{105kPa*\frac{0.009869atm}{1kPa}*1.75L}{0.082\frac{atm*L}{mol*K}*(23+273.15)K} \\\\n=0.0747mol

Best regards.

8 0
2 years ago
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