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bogdanovich [222]
3 years ago
14

Which is the properly balanced equation that shows the synthesis of limewater, Ca(OH)2, from calcium oxide and water?

Chemistry
2 answers:
podryga [215]3 years ago
6 0

Answer:

The answer is (A) calcium oxide CaO and water H₂O react to form Ca(OH)₂

Explanation:

Maurinko [17]3 years ago
5 0
Calcium oxide CaO and water H₂O react to form Ca(OH)₂

CaO + H_2O \to Ca(OH)_2

The answer is A.
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Why are many fossil remains left from the last ice age
Vaselesa [24]
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8 0
3 years ago
The formula of an iodate of lanthanum is la(io3)3. what is the formula of the sulfate of lanthanum with the same oxidation numbe
sammy [17]

Iodate has a charge of -1, this means its chemical symbol must be IO3(-1) while Lanthanum is La(+3). Therefore making the compound La(IO3)3.

However sulfate has a chemical symbol of SO4(-2), it has charge of -2, therefore the formula for lanthanum sulfate is:

<span>La2(SO4)<span>3</span></span>

8 0
3 years ago
Read 2 more answers
A 62.6-gram piece of heated limestone is placed into 75.0 grams of water at 23.1°C. The limestone and the water come to a final
VMariaS [17]
M₁ = mass of water = 75 g
T₁ = initial temperature of water = 23.1 °C
c₁ = specific heat of water = 4.186 J/g°C

m₂ = mass of limestone = 62.6 g
T₂ = initial temperature of limestone = ?
c₂ = specific heat of limestone = 0.921 J/g°C

T = equilibrium temperature = 51.9 °C
using conservation of heat
Heat lost by limestone = heat gained by water
m₂c₂(T₂ - T) = m₁c₁(T - T₁)
inserting the values
(62.6) (0.921) (T₂ - 51.9) = (75) (4.186) (51.9 - 23.1)
T₂ = 208.73 °C
in three significant figures
T₂ = 209 °C
7 0
3 years ago
The wavelength of a light wave can be used to measure which of the following
Tema [17]
Wavelength is the distance between crests of the wave.
4 0
3 years ago
SCIENCE, PLEASE HELP.
sesenic [268]

Answer: B

Explanation:

protons are positive,

electrons are negative,

and neutrons are neutral.

the amount of electrons to protons is always the same in a balanced atom.

electrons can be removed creating "ions" which is simply an unbalanced atom. removing protons would result in a different type of atom or element.

3 0
3 years ago
Read 2 more answers
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