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spayn [35]
3 years ago
13

What changes chemical energy to something you can use

Chemistry
1 answer:
lutik1710 [3]3 years ago
6 0

based on the law of conservation of energy its it atoms hold by strong chemical bonds

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Which image shows an ion?
Juli2301 [7.4K]

Answer:

D

Explanation:

Both images have 4 protons (positive particles) and 4 electrons (negative particles) so in total they don't have a charge. (<em>you don't have to worry about neutrons in this case, because they don't have a charge.)</em>

An ion has a charge so neither image is an ion

7 0
3 years ago
Which contribution added to rutherfords discovery of a positive nucleus atoms are invisible electrons are scattered in an atom n
dedylja [7]

Answer:

neutrons are inside the nucleus

Explanation:

The most significant contribution that added to Rutherford's discovery of a positive nucleus is that neutrons are also inside the nucleus.

  • The discovery of neutrons as a nuclear particle was instrumental to Rutherford's discovery.
  • Since during his experiment, the alpha particles were deflected partly, he suggested a massive nucleus made up of just protons.
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3 years ago
2-ciclopropilpropano​
DaniilM [7]

Answer:

cool

Explanation:

3 0
3 years ago
8. What is the [H+] of a solution with a pH of 4.78
lidiya [134]

Answer:

7.01 is the answer of the [H+] of a solution with a pH of 4.78

3 0
3 years ago
What is the volume of 12.0 grams of oxygen gas at STP<br><br> Atomic mass:O = 15.99 grams/moles
strojnjashka [21]

Answer:

16.82 L.

Explanation:

  • We can use the general law of ideal gas: PV = nRT.

where, P is the pressure of the gas in atm (P = 1.0 atm, STP conditions).

V is the volume of the gas in L (V = ??? L).

n is the no. of moles of the gas in mol (n = mass/molar mass = (12.0 g)/(15.99 g/mol) = 0.7505 mol).

R is the general gas constant (R = 0.0821 L.atm/mol.K),

T is the temperature of the gas in K (T = 0.0°C + 273 = 273.0 K, STP conditions).

<em>∴ V = nRT/P</em> = (0.7505 mol)(0.0821 L.atm/mol.K)(273.0 K)/(1.0 atm) = <em>16.82 L.</em>

6 0
4 years ago
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