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kaheart [24]
3 years ago
14

Which best describes a swimming pool?

Chemistry
2 answers:
swat323 years ago
8 0
A swimming pool is a solution as it is a solution of chlorinated water
serious [3.7K]3 years ago
8 0

Answer:

3) it is a solution

Explanation:

A solution has two components: solute which is the minor component and a solvent which is the major component in which a solute is dissolved.

For example: a salt solution is essentially sodium chloride (NaCl) dissolved in water. Here: NaCl is the solute and water is the solvent

Reactant and product are terms used in the context of chemical reactions, Reactant is an element or a compound that combines with another compound   to form one or more products.

In the given example: a swimming pool has two components: chloride solute (disinfectant) dissolved in a water solvent. Hence it is a solution.

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True or false daltons atomic theory stated that matter is mostly empty space
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The answer is false. Because Daltons theory stated that the Atom was a solid ball. 
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Do the alkali metals tend to gain or lose electrons in chemical reactions?
timofeeve [1]
Noble Gases more often than not don't respond on the grounds that they don't tend to pick up or lose electrons. Salt and Alkaline Earth Metals are delicate and soften at low temperatures. Incandescent lamp are extremely receptive nonmetals since they effortlessly acknowledge electrons from different components.
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What do the numbers listed for an element on the periodic table represent
garik1379 [7]
The number with a lower value is the number of protons and the number with a higher value is the mass
8 0
3 years ago
Read 2 more answers
Please help me please
Roman55 [17]

Answer:

Explanation:

Molarity = moles / volume (L)

moles = mass (g) / Molecular weight (g/mol)

so you have mass in gram and volume in ml ( Volume must be in litter because unit of mass is gram )

g = L     ,   mg = ml

first you must calculate the number of moles for each molecule and convert the ml to L and use the molarity law to calculate molarity for each molecule .

Ex71.

a.   Mw for NaCl = 23+35 = 58 g/mole

no of moles = 1.5 / 58 = 0.025

ml to L = 100/1000 = 0.1 L

Molarity = 0.025 / 0.1 = 0.25 M

b. Mw for K2CrO4 = 39x2 + 52 + 16x4 = 194 g/mol

no of moles = 1.5 / 194 = 0.0077

ml to L = 100 / 1000 = 0.1 L

Molarity = 0.0077 / 0.1 = 0.077 M

----------------------------------------------

Ex 72

a.  Mw for MgBr = 24 + 80 = 104 g/mol

no of moles = 20 / 104 = 0.19

ml to L = 250 / 1000 = 0.25 L

Molarity = 0.19 / 0.25 = 0.76 M

b. Mw for LiCO = 7 + 12 + 16 = 35 g/mol

no of moles = 5.55 / 35 = 0.158 moles

ml to L = 75 / 1000 = 0.075 L

Molarity = 0.158 / 0.075 = 2.106 M

Good Luck

3 0
3 years ago
How many kilojoules of heat are needed to completely vaporize 42.8 grams of c4h10o at its boiling point given that c4h10o has a
Darina [25.2K]
Answer is: 15.30 kilojoules of heat are needed to completely vaporize C₄H₁₀<span>.
m(</span>C₄H₁₀) = 42.8 g.
M(C₄H₁₀) = 74.12 g/mol.
n(C₄H₁₀) = m(C₄H₁₀) ÷ M(C₄H₁₀).
n(C₄H₁₀) = 42.8 g ÷ 74.12 g/mol.
n(C₄H₁₀) = 0.577 mol.
Q = n(C₄H₁₀) · ΔHvap.
<span>Q = 0.577 mol </span>· 26.5 kJ/mol.
<span>Q = 15.30 kJ, heat of butane.

</span>
6 0
3 years ago
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