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Naddika [18.5K]
3 years ago
7

Refer to pic plssss

Chemistry
1 answer:
ira [324]3 years ago
4 0

Answer:

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What was the result of the atomic theory?
Cerrena [4.2K]

Answer:

The result of the atomic theory was atomic theory proposed that all matter was composed of atoms, also postulated that chemical reactions resulted in the rearrangement of the reacting atoms.

4 0
3 years ago
Which statements correctly describe the decay rates of radioactive isotopes?
storchak [24]

Answer: b} The exact time when an individual atom will decay can be accurately predicted.

c} After each half-life, the amount of radioactive material is reduced by half.

Explanation:

All radioactive decay  follows first order kinetics.

Rate law expression for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant

t = time taken for decay process

a = initial amount of the reactant

a - x = amount left after decay process

Expression for calculating half life, which is the time taken by the half of the reactants to decompose is:

t_{1/2}=\frac{0.693}{k}


4 0
3 years ago
Read 2 more answers
Which carbon skeleton represents a ketone?<br> c-c-c-c=0<br> C-C-C-C-0<br> C-C-C-C-o<br> C-C-0-C
aliina [53]

Answer:

None of the options are correct

Explanation:

Ketone is an organic compound with general formula RCOR' ie RC=OR where R and R' are alkyl groups. Example of ketone can be written as:

C—C—C=O—C

8 0
3 years ago
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Change for a liquid state to a solid state is known as what phase change?
NeTakaya

Answer:

B. To change from a liquid state to a solid state is called Freezing

5 0
3 years ago
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Where more of hydrogen are contained in 90 g of water or in 80 g of methane
Lynna [10]
Methane.

Water - H2O
Methane - CH4

Methane has 2 more hydrogens than water.
7 0
3 years ago
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