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3 years ago

The chemical formula for strontium sulfite is SrSO3. TRUE FALSE

1 answer:

3 0

Valency is the number of electrons lost or gained by an atom to attain an stable configuration. Valency is important when writing the formula of chemical compounds in chemistry. Strontium has a valency of 2 while sulfite ion (radicle) has a valency of 2. Therefore, the chemical formula of strontium sulfite is written as SrSO3.

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Papessa [141]

1. Melting

2. Condensation

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3 years ago

Read 2 more answers

If an object goes through a chemical reaction but does not change in mass that object has

eimsori [14]

Answer:

The law of conservation of mass

Explanation:

The law of conservation of mass

6 0

2 years ago

What volume will water vapor form when 40 liters of hydrogen completely reacts with 25 liters of oxygen? Assume the temperature

Brut [27]

2H2 + O2 ---->2H2O
number of moles in reaction 2 mol 1 mol 2 mol
number of liters in the reaction 2*22.4 L 1*22.4 L 2*22.4L
We can see that volumes of the gases are proportional to coefficients in the reaction ( if gases are under the same conditions), so we can write

2H2 + O2 ---->2H2O
2 L 1 L 2 L
given 40 L ( 25 L) 40 L

We can see that we have excess of O2,
because if 2 L H2 are needed 1 L O2, then 40 L of H2 are needed 20 L O2.

So, limiting reactant is H2, and we will need to calculate Volume of H2O using H2.
2L H2 give 2L H2O(gas), so 40 L H2 give 40 L H2O.

7 0

4 years ago

In synthesis reactions, there are always more _____________ than ________________.

nydimaria [60]

Answer:

Explanation:

always more reactants than products

4 0

3 years ago

How much heat must be removed from 456 g of water at 25. 0 c to hcange it into ice at 10 c

ValentinkaMS [17]

The heat required to convert water is given as the product of the mas and the latent heat. 28.34 kJ heat must be removed from the water to change it into ice.

<h3>What is heat energy?</h3>

Heat energy is the product of mass, specific heat capacity, and temperature change. It is given as,

$\rm Q = mc \Delta T$

Given,

Mass of water = 456 gm

Specific heat capacity = 4.186 J / g K

Temperatutre change = 14.85 K

Substituting values above:

$\begin{aligned} \rm Q &= 456 \times 4.186 \times 14.85\\\\&= 28345.91\;\rm J\\\\&= 28.34\;\rm kJ\end{aligned}$

Therefore, 28.34 kJ of heat energy should be removed from the water.

Learn more about the heat here:

brainly.com/question/14052023

#SPJ4

6 0

2 years ago