2 years ago

Thermal expansion occurs when particles of matter move farther apart as temperature increase. True or false ?

Chemistry

1 answer:

IceJOKER [234]2 years ago

3 0

Answer:

true

Explanation:

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2. Bart finds a solid shiny

notsponge [240]

Answer:

1. Density of metal object = 11000 kg / m3.

2. Could the object be gold = No,because the density of gold is 19300 kg / m3.

7 0

3 years ago

A chemistry student was asked to calculate the number of moles of iron required to react with 1.20 mol of oxygen to produce iron

nikitadnepr [17]

I’m on the same one smh

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3 years ago

According to the equation below, how many moles of Ca(OH)2 are required to react with 1.36 mol H3PO4 to produce Ca3(PO4)2? 3Ca(O

allsm [11]

Answer: The amount of calcium hydroxide needed to react is 2.04 moles

Explanation:

We are given:

Moles of phosphoric acid = 1.36 moles

For the given chemical equation:

$3Ca(OH)_2+2H_3PO_4\rightarrow Ca_3(PO_4)_2+6H_2O$

By Stoichiometry of the reaction:

2 moles of phosphoric acid reacts with 3 moles of calcium hydroxide

So, 1.36 moles of phosphoric acid will react with = $\frac{3}{2}\times 1.36=2.04mol$ of calcium hydroxide

Hence, the amount of calcium hydroxide needed to react is 2.04 moles

3 0

3 years ago

State relationship between the level of dissolved oxygen and water temperature

Artemon [7]

More dissolved oxygen is present in water with a lower temperature compared to water with a higher temperature. The reason for this inverse relationship between dissolved oxygen and temperature is that the solubility of a gas in a liquid is an equilibrium phenomenon.

8 0

3 years ago

The equation below shows the products formed when a solution of silver nitrate (AgNO3) reacts with a solution of sodium chloride

d1i1m1o1n [39]

I would say that the answer has to be C
Since there is no change in mols on both sides of the equation the mass is constant

3 0

3 years ago

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