3 years ago

Physical changes occur when matter changes its property but not its

Chemistry

1 answer:

NNADVOKAT [17]3 years ago

8 0

This statement is true

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So I ordered a moonstone crystal and I was wondering if it’s real and is there anything I need about it??

Artemon [7]

Mmmmmmmh prolly fake stone

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3 years ago

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PLEASE HELP! Which type of molecule is shown below?

sesenic [268]

Answer:

its ketone molecule structure.

Ketone Molecular Structures. A ketone is characterized by the presence of a carbonyl group (C=O) connected to 2 other carbon atoms.

Explanation:

4 0

3 years ago

If 2.0×10−4 moles of S2O2−8 in 170 mL of solution is consumed in 170 seconds , what is the rate of consumption of S2O2−8?

Ostrovityanka [42]

Answer : The rate of consumption of $S_2O_2^{-8}$ is, $7.0\times 10^{-6}M/s$

Explanation : Given,

Moles of $S_2O_2^{-8}$ = $2.0\times 10^{-4}mol$

Volume of solution = 170 mL = 0.170 L (1 L = 1000 mL)

Time = 170 s

First we have to calculate the concentration.

$\text{Concentration}=\frac{\text{Moles}}{\text{Volume of solution}}$

$\text{Concentration}=\frac{2.0\times 10^{-4}mol}{0.170L}$

$\text{Concentration}=1.2\times 10^{-3}M$

Now we have to calculate the rate of consumption.

$\text{Rate of consumption}=\frac{\text{Concentration}}{\text{Time}}$

$\text{Rate of consumption}=\frac{1.2\times 10^{-3}M}{170s}$

$\text{Rate of consumption}=7.0\times 10^{-6}M/s$

Thus, the rate of consumption of $S_2O_2^{-8}$ is, $7.0\times 10^{-6}M/s$

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4 years ago

Conversion worksheet

soldi70 [24.7K]

5 meters = 0.005 km
3 grams = 3,000 milligrams
7 meters = 700 centimeters
Im not sure about #4
2.5 meters = 2,500 mm
77 meters # 770 Dec I meters
0.002 cm = 0.02 mm
44 mm = 0.044 meters

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4 years ago

Look at the values that were calculated in the bottom row of Table A. Compare the percentage of mass remaining for each sample t

lara [203]

The answer is Sample F

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4 years ago

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