3 years ago

Help me answer Number 8 please

1 answer:

3 0

I and III because when wearer boil the kinetic energy atoms move faster and the particles break apart which means the space increases instead of decreasing

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What do you make when you dissolve sugar in water?

Rasek [7]

Answer:

Answer is c.

Explanation:

when you mix sugar with water,the sugar dissolves to make a transparent solution.

I hope it's helpful!

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3 years ago

How many ways can you choose ten tadpoles from a pool of 20

Georgia [21]

Take half the amount

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3 years ago

Which of the following is the correct balanced equation for the reaction in which methane (CH4) burns in atmospheric oxygen (0₂)

Talja [164]

Answer: $\text{CH}_{4}+2\text{O}_{2} \longrightarrow \text{CO}_{2}+2\text{H}_{2}\text{O}$

Explanation:

The unbalanced equation is

$\text{CH}_{4}+\text{O}_{2} \longrightarrow \text{CO}_{2}+\text{H}_{2}\text{O}$

Balancing this equation, we get:

$\boxed{\text{CH}_{4}+2\text{O}_{2} \longrightarrow \text{CO}_{2}+2\text{H}_{2}\text{O}}$

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2 years ago

1. What is a metal replacement reaction?

MAXImum [283]

Answer:

a reaction in which one element is substituted for another element in a compound

Explanation:

4 0

2 years ago

If you want to determine the actual salicylate concentration for a sample that gives a greater absorption than the highest conce

Anarel [89]

Answer: The concentration of unknown sample is 1.8 mg/ml

Explanation:

According to the dilution law,

$M_1V_1=M_2V_2$

where,

$M_1$ = concentration of stock solution = ?

$V_1$ = volume of stock solution = 0.25 ml

$M_1$ = concentration of diluted solution = 0.45 mg/ml

$V_1$ = volume of diluted solution = (0.25+0.75) ml = 1.00 ml

Putting in the values we get:

$M_1\times 0.25=0.45\times 1.00$

$M_1=1.8mg/ml$

Therefore, concentration of unknown sample is 1.8 mg/ml

3 0

3 years ago