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2 years ago

CaCO3 (s) + 2HCl (aq) → CaCl2 (aq) + CO2 (g) + H20 (1)

Chemistry

1 answer:

MAXImum [283]2 years ago

6 0

Answer:

solid and liquid state respectively

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A student is told to use 20.0 grams of sodium chloride to make an aqueous solution that has a concentration of 10.0 grams of sod

Butoxors [25]

Volume of the solution = $20.0 g NaCl * \frac{1 L solution}{10.0 g NaCl}$

= 2 L solution x $\frac{1000 mL}{1 L} =2000 mL$

Volume of solute = 7.5 mL

Volume of water (solvent) = 2000 mL - 7.5 mL = 1992.5 mL water

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3 years ago

When c-14 transmutates into n-14, this represents 14 6 carbon becomes 14 7 nitrogen plus blank an alpha decay electron capture n

Evgesh-ka [11]

Answer is: negative beta decay.

Nuclear reaction: ¹⁴C → ¹⁴N + e⁻ + νe (electron antineutrino).
In beta minus decay (atomic number Z is increased by one, from 6 in carbon to 7 in nitrogen) neutron is converted to a proton and an electron and an electron antineutrino.
Beta decay is radioactive decay in which a beta ray and a neutrino are emitted from an atomic nucleus.

7 0

2 years ago

11. Which of the following best explains why Co, gas is easily compressible but solid CO, (dry ice) is incompressible?

telo118 [61]

Answer:

The molecules of solid CO2 are much closer together than the molecules of CO2 gas.

4 0

2 years ago

The second reaction in the formation of sulfuric acid occurs slowly.

rjkz [21]

Answer: The correct option is $NO_2(g)$

Explanation:

A catalyst is defined as the chemical species that increases the reaction rate but does not participate in it and is left behind after the completion.

A homogeneous catalyst is one that is present in the same phase as the reactants and products.

A heterogeneous catalyst is one that is present in different phase as that of reactants and products.

For the given chemical reaction:

$2SO_2(g)+O_2(g)\rightarrow 2SO_3(g)$

As all the reactants and products are in gaseous state so, the homogeneous catalyst must also be in the gaseous state only.

Hence, the correct option is $NO_2(g)$

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2 years ago

Explain why heating a liquid causes it to evaporate more quickly.

Elina [12.6K]

Answer:

If a liquid is heated the particles are given more energy and move faster and faster expanding the liquid. The most energetic particles at the surface escape from the surface of the liquid as a vapour as it gets warmer. Liquids evaporate faster as they heat up and more particles have enough energy to break away.

Explanation:

7 0

2 years ago