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andre [41]
3 years ago
9

Use the activity series below to predict the products of each of the following reactions. Do not worry

Chemistry
1 answer:
AleksAgata [21]3 years ago
8 0

Answer:

K2CO3 + 2Na

Explanation:

The equation for the reaction is given below:

Na2CO3 + K —>

Since K is higher than Na in the activity series, K will displace Na and the reaction will proceed as follow:

Na2CO3 + 2K —> K2CO3 + 2Na

The products are K2CO3 + 2Na

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A cup of sugar has a volume of 237 ml. What is the mass of the сup of sugar if the density is 1.59 g/mL?
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Answer:

\boxed {\tt 376.83 \ grams}

Explanation:

The density formula is

d=\frac{m}{v}

Rearrange the formula for mass, m, by multiplying both sides of the equation by v.

d*v=\frac{m}{v}*v

d*v=m

The mass can be found by multiplying density and volume.

The density of the sugar is 1.59 grams per milliliter. The volume is 237 milliliters.

d= 1.59 \ g/mL \\v= 237 \ mL

Substitute the values into the formula.

m= 1.59 \ g/mL * 237 \ mL

Multiply. Note that the milliliters, or mL will cancel each other out.

m=1.59 \ g * 237

m=376.83 \ g

The mass is 376.83 grams.

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Who was the first person to show strong empirical evidence for the existence of atoms?.
Mekhanik [1.2K]

Given what we know, we can confirm that John Dalton was the first person to show strong empirical evidence for the existence of atoms.

<h3>Who was John Dalton?</h3>
  • He was a renowned scientist with knowledge in many fields.
  • He was known to be a chemist, meteorologist, and physicist.
  • He proposed the atomic theory and carried out experiments to provide supporting evidence.

Therefore, given his proposal of the atomic theory and the experiments he carried out to provide evidence to support his claims, we can confirm that John Dalton was the first person to show strong empirical evidence for the existence of atoms.

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