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Dvinal [7]
3 years ago
8

Name the Scientist

Chemistry
1 answer:
IRISSAK [1]3 years ago
7 0

Answer:

A. Ernest Rutherford

B.Bohr

C. Eugen Goldstein

D.. Santiago Ramon y cajal

E.john Dalton

F.isobars - a line drawn on a weather map connecting points of equal pressure is called isobars.

example.. argon 40

potassium 40

.two differences between isobars and isotopes.

isobars are those elements which have different atomic number but the same mass number. while isotopes are those elements having the same atomic number and different mass number..

two uses of isotopes.

uranium 235 - for nuclear fission and as fuel in unclear reactors.

# an isotope cobalt - used In the treatment for cancer

# an isotope iodine - used in treatment of goiter.

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What type of a reaction occurs when a sodium hydroxide solution is mixed with an acetic acid solution?
Harman [31]

Answer:

C) acid-base neutralization

Explanation:

NaOH + CH₃COOH = CH₃COONa + H₂O

Break the solutions apart:

NaOH = Na⁺ + OH⁻

CH₃COOH = CH₃COO⁻ + H⁺

Combine the resulting solution after the reaction:

OH⁻ + H⁺ = H₂O

7 0
3 years ago
Read 2 more answers
How many grams of water can I convert from a liquid to a gas with 6768 joules?
vredina [299]

Answer:

The amount of water converted from liquid to gas with 6,768 joules is approximately 3.035 g

Explanation:

The amount of heat required to convert a given amount of liquid to gas at its boiling point is known as the latent heat of evaporation of the liquid

The latent heat of evaporation of water, ΔH_v ≈ 2,230 J/g

The relationship between the heat supplied, 'Q', and the amount of water in grams, 'm', evaporated is given as follows

Q = m × ΔH_v

Therefore, the amount of water, 'm', converted from liquid to gas at the boiling point temperature (100°C), when Q = 6,768 Joules, is given as follows;

6,768 J = m × 2,230 J/g

∴ m = 6,768 J /(2,230 J/g) ≈ 3.035 g

The amount of water converted from liquid to gas with 6,768 joules = m ≈ 3.035 g.

8 0
3 years ago
A compound is formed when 171.2 g of carbon reacts with 28.8 g of hydrogen. What is the mass percent of hydrogen in the compound
IgorLugansk [536]
Following the law of conservation of mass, the mass percent of hydrogen in the resulting compound is 14.4%(wt/wt). This is assuming that all of the carbon reacts with all of the hydrogen. The solution is as follows:

mass % = mass hydrogen*100/total mass = 28.8*100/(28.8+171.2) = 14.4%
4 0
3 years ago
what is the number of moles formed when 20.50g of Copper 2 oxide completely react with hydrogen gas.​
CaHeK987 [17]

CuO(aq) + H2(g) → H2O(l) + Cu(s)

CuO= 64 + 16= 80g

1 mole of CuO → 1 mole of Cu

80g of CuO → 1 mole of Cu

20.50g of CuO → y

y= 20.50/80= 0.26mole.

4 0
2 years ago
Choose the correct one ​
Roman55 [17]

Answer:

B. More reactant is added.

Explanation:

The question basically asks at which condition would the forward reaction be favoured.

The law of equilibrium states when a system at equilibrium is disturbed by, it would annul that change. In order to increase the forward reaction, more of the reactant should be added. In order to annul this change, the system would have to favour the reaction that deals with reducing the amount of reactant added.

The correct option is;

B. More reactant is added.

5 0
3 years ago
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