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pychu [463]
3 years ago
11

UNIT TEST

Chemistry
1 answer:
Aleksandr-060686 [28]3 years ago
8 0

Answer:

Six

Explanation:

I just took it and that is the correct answer.

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Why is ice cream a mixture
kvasek [131]

Ice is a mixture and it can be a compound at the same time. A mixture is when you have to substance's put together fro example you can mix salt and sugar together. But a compound is when two different elements or molecules are combined. Ice cream is a mixture or cream and sugar mainly.
7 0
3 years ago
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In the reaction of sodium and oxygen, which atom is the reducing agent?
pishuonlain [190]
Sodium is the reducing agent because a reducing agent is always the donor of electrons.
8 0
3 years ago
What is the density of CHCL3 vapor at 1.00atm and 298K?
Advocard [28]

Answer:

4.8 g/mL is the density of chloroform vapor at 1.00 atm and 298 K.

Explanation:

By ideal gas equation:

PV=nRT

Number of moles (n)

can be written as: n=\frac{m}{M}

where, m = given mass

M = molar mass

PV=\frac{m}{M}RT\\\\PM=\frac{m}{V}RT

where,

\frac{m}{V}=d which is known as density of the gas

The relation becomes:

PM=dRT    .....(1)

We are given:

M = molar mass of chloroform= 119.5 g/mol

R = Gas constant = 0.0821\text{ L atm }mol^{-1}K^{-1}

T = temperature of the gas = 298K

P = pressure of the gas = 1.00 atm

Putting values in equation 1, we get:

1.00atm\times 119.5g/mol=d\times 0.0821\text{ L atm }mol^{-1}K^{-1}\times 298K\\\\d=4.88g/L

4.8 g/mL is the density of chloroform vapor at 1.00 atm and 298 K.

7 0
3 years ago
TRUE OR FALSE : Cell specialization is when a cell has a particular function or job. <br> help ?
liubo4ka [24]

Answer:

True

Explanation:

Cell specialization is the process by which generic cells change into cells meant to do certain tasks within the body

hope this helps :)

8 0
3 years ago
The formula relating mass and weight is W=
KatRina [158]

Answer:

The weight of an object is defined as the force of gravity on the object and may be calculated as the mass times the acceleration of gravity, w = mg.

Explanation:

<h3>W=F=M x G</h3>
6 0
2 years ago
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