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3 years ago

What is something that is not moving with respect to an observer that can be used to detect motion

Chemistry

2 answers:

Anton [14]3 years ago

6 0

Answer:

Frame of reference

larisa86 [58]3 years ago

3 0

Answer:

Frame of reference

Explanation:

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Calcium oxide (CaO), an important ingredient in cement, is produced by decomposing calcium carbonate (CaCO3) at high temperature

alisha [4.7K]

Answer:

0.0018 mol/min is the average rate of carbon dioxide gas production in moles per minute during the 10 minutes.

Explanation:

Pressure of carbon dioxide gas = P = 0.25 atm

Volume of carbon dioxide gas = V = 5.0 L

Moles of carbon dioxide gas = n

Temperature of the carbon dioxide gas,T = 550°C = 550+273 K = 823 K

Using an ideal gas equation :

$PV=nRT$

$n=\frac{PV}{RT}=\frac{0.25 atm\times 5.0 L}{0.0821 atm L/mol K\times 823 K}$

n = 0.018 mol

In 10 minutes pressure of carbon dioxide gas reached to 0.25 atm

Average rate of production of moles of carbon dioxide gas per minute in duration of 10 minutes:

$=\frac{0.018 mol}{10 min}=0.0018 mol/min$

0.0018 mol/min is the average rate of carbon dioxide gas production in moles per minute during the 10 minutes.

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3 years ago

Deshocribe how you could separate and purify compound A from a mixture of two neutral compounds (A and B) when A comprises 95% o

uranmaximum [27]

Answer:

Good Luck!

<em>Follow m</em>e

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3 years ago

Is freshwater a mixture?

dem82 [27]

Answer:

Explanation:

A mixture is when two or more substances combine physically together. However, in water, two hydrogen atoms combine with one oxygen atom chemically, forming a new substance that has properties different from hydrogen alone or oxygen alone. ... Therefore, water is not a mixture

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3 years ago

Mi One should know the properties of the components of the mixture to separate it. Explain with an example.

Alekssandra [29.7K]

One should know that the properties of the components of the mixture.
Suppose a mixture contains Sodium or potassium .If you put them in open air it may catch fire.
Suppose a mixture has flammable components like kerosene,spirit .If you put them in fire it may harm you .

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3 years ago

What does absolute zero physically mean at the particle level? <br> ASAP!

antoniya [11.8K]

Answer:

Absolute zero is the lowest limit of the thermodynamic temperature scale, a state at which the enthalpy and entropy of a cooled ideal gas reach their minimum value, taken as zero kelvin.

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2 years ago