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Tomtit [17]
2 years ago
15

What is an example of reactivity?

Chemistry
1 answer:
Vedmedyk [2.9K]2 years ago
4 0
Reactivity is an impetus For which a chemical substance undergoes A chemical either by itself or with another materialWith an overall release of energy
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A chemist carefully measures the amount of heat needed to raise the temperature of a 894.0g sample of a pure substance from to −
astraxan [27]

Answer:

C = 0.2349 J/ (g °C)

Explanation:

Mass, m = 894.0g

Initial Temperature = −5.8°C

Final Temperature =  17.5°C

Temperature change = 17.5°C - (−5.8°C) = 23.3

Heat, H = 4.90kJ = 4900 J

Specific heat capacit, C = ?

The relationship between these quantities is given by the equation;

H = mCΔT

C = H / mΔT

C = 4900 / (894)(23.3)

C = 0.2349 J/ (g °C)

4 0
3 years ago
Explain the reaction of metals with water.<br><br>​
telo118 [61]

Answer:

it rusts

Explanation:

4 0
3 years ago
How many moles of chlorine (Cl) atoms are in a sample of 1.72 × 1022 atoms? 0.0286 mol Cl 35.0 mol Cl 1.03 × 1023 mol Cl 1.04 ×
kogti [31]

Given information : Sample of 1.72\times 10^{22} atoms

We need to find the moles of Chlorine in the given sample.

We can say that we need to find moles from the given atoms.

Relation between mole and atom is given by : 1 mole = 6.022\times 10^{23} atoms

Where 6.022\times 10^{23} is Avogadro number.

1.72\times 10^{22} atoms\times \frac{1 mole}{6.022\times 10^{23} atoms}

1.72\times 10^{22}\times \frac{1 mole}{6.022\times 10^{23}}

On solving the above equation , atoms(unit) gets cancelled out and we get 0.0286 mol.

In the given sample the moles of Chlorine (Cl) is 0.0286 mol , so option A is correct.

6 0
3 years ago
When a plant cell with 36 chromosomes goes through mitosis, how many daughter cells will be produced and how many chromosomes wi
SCORPION-xisa [38]

Answer:

I believe it would be 30 chromosomes

Explanation:

Hope that this helps you    ;-)

7 0
3 years ago
Read 2 more answers
One mole of silver has a mass of 107.9 grams. Approximately how many atoms of silver are present in one mole of silver
Katen [24]

Answer: Silver has an atomic mass of aproximately 107.9.

Explanation:

1 mole of silver atoms = 107.9g and there are 6.02x10^23 atoms in one mole.

8 0
3 years ago
Read 2 more answers
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