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Lelu [443]
3 years ago
13

What element is located in Group 2, Period 4?

Chemistry
2 answers:
Murljashka [212]3 years ago
8 0

Answer:

calcium

Explanation:

you can check on the periodic table

Wittaler [7]3 years ago
6 0

Answer:

A

Thank tou

♡♡♡◇◇♧♧♡♡◇♧♡♤◇♧♡♤♤◇♧

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its a redox reaction.

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3 years ago
Is copper II chloride mixed with water an element, compound, or mixture? If it's a mixture is it homogeneous or heterogeneous?
Fittoniya [83]

Answer:

1. mixture

2. Homogenous

Explanation:

Copper II chloride is a compound because it consists of elements that are chemically combined together. When a solute in this case, copper II chloride is mixed with water- a solvent, the result is a homogenous mixture.

Homogenous substances are formed when a solute and a solvent combine, resulting in a mixture with uniform properties. Mixtures can be separated using relevant separation techniques.

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2 years ago
For the gas phase decomposition of nitrosyl chloride at 400 K , the rate of the reaction is determined by measuring the appearan
UkoKoshka [18]

Answer:

2.067 x 10⁻⁷ M/min.

Explanation:

  • Knowing that the rate of the reaction is the change in the concentration of reactants (decrease) or the products (increase) with time.

  • For the reaction: <em>2NOCl ⇄ 2NO + Cl₂,</em>

<em>Rate of the reaction = - 1/2 d[NOCl]/dt = 1/2 d[NO]/dt = d[Cl₂]/dt</em>

∵ d[Cl₂] = 3.39 x 10⁻³ M, dt = 1.64 x 10³ min.

∴ Rate of the reaction = d[Cl₂]/dt = (3.39 x 10⁻³ M) / (1.64 x 10³ min) = 2.067 x 10⁻⁷ M/min.

5 0
3 years ago
What is true of the total mass of reactants compared to the total mass of products
kaheart [24]

Answer:

The total mass of reactants equals the total mass of products  

Step-by-step explanation:

The <em>Law of Conservation of Mass</em> states that matter cannot be created or destroyed in a chemical reaction:

Reactants ⟶ products

Thus, if you start with a given mass of reactants, the total mass of products will equal the total mass of reactants.

3 0
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Classify CH3CH2NHCH3 as a strong base or a weak base
harina [27]

CH3CH2NHCH3 is a weak base.

5 0
2 years ago
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