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2 years ago

What does temperature measure?

Chemistry

2 answers:

Schach [20]2 years ago

8 0

Temperature measures the (average) kinetic energy of a system .

lesya [120]2 years ago

7 0

Answer:

Kinetic energy of a system .

Explanation:

Hello,

The temperature is a measure of the average kinetic energy of the atoms or molecules in the system as long as it accounts for the movement of the particles composing the system, thus, the higher the temperature, the higher the kinetic energy as the atoms or molecules could move faster and vigorously.

Best regards.

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Write the net ionic equation for any precipitation reaction that may be predicted when aqueous solutions of calcium iodide and c

Hitman42 [59]

Answer: The net ionic equation is written below.

Explanation:

Net ionic equation of any reaction does not include any spectator ions.

Spectator ions are defined as the ions which does not get involved in a chemical equation. They are found on both the sides of the chemical reaction when it is present in ionic form.

The chemical equation for the reaction of calcium iodide and chromium (III) sulfate is given as:

$3CaI_2(aq.)+Cr_2(SO_4)_3(aq.)\rightarrow 3CaSO_4(s)+2CrI_3(aq.)$

Ionic form of the above equation follows:

$3Ca^{2+}(aq.)+6I^{-}(aq.)+2Cr^{3+}(aq.)+3SO_4^{2-}(aq.)\rightarrow 3CaSO_4(s)+2Cr^{3+}(aq.)+6I^-(aq.)$

As, chromium and iodide ions are present on both the sides of the reaction. Thus, it will not be present in the net ionic equation and are spectator ions.

The net ionic equation for the above reaction follows:

$3Ca^{2+}(aq.)+3SO_4^{2-}(aq.)\rightarrow 3CaSO_4(s)$

Hence, the net ionic equation is written above.

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2 years ago

Which chemical is the reducing agent in the redox reaction below?

pychu [463]

The reducing agent is the element that gets oxidized. Therefore, Zn(s) is the correct choice. It goes from 0 charge to 2+

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What is the gram formula mass of caso4.2h2o?

I am Lyosha [343]

So your practically trying to finding the molar mass of CaSO₄.2H₂O and that is found by adding all the molar masses of the individual elements:

So Ca = 40 g/mol
S = 32 g/mol
O = 16 /mol
H = 1 g/mol

molar mass of CaSO₄.2H₂O = [(40) + (32) + (16 × 4) + (2 × 1 × 2) + (2 × 16)]
= 172 g/mol

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