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Dmitriy789 [7]
3 years ago
14

I need ur help guys please. 50 pts​

Chemistry
2 answers:
Allushta [10]3 years ago
4 0

Answer:

Sodium Chloride - Food flavoring, preservation and desiccation, fermentation processes, wood pulp bleaching in paper industry, buna and neoprene production in plastic industry.

Sodium Hydroxide - Bar soap and detergent production, drain cleaning, paper manufacturing, purification of bauxite ore prior aluminium production, artificial fibers production, oil refining.

Sodium Carbonate - Glass manufacturing, water softening, food additive, soap manufacturing, antiacid production.

Sodium Sulphate - Drugs for therapeutical use, wood pulp production in paper industry, soap and detergent production.

Potassium Nitrate - Fertilizer production, rocket propellant and gunpower production, wastewater treatment.

Potassium Chlorate - Oxygen-supply systems in aerospace applications.

Potassium Permanganate (VII) - Treatments of fungi and bacterial infections, wasterwater treatment and gastric irrigation.

Potassium Chloride - Hypoalkemia treatment, flavor enhancing in food.

Explanation:

Sodium Chloride - Food flavoring, preservation and desiccation, fermentation processes, wood pulp bleaching in paper industry, buna and neoprene production in plastic industry.

Sodium Hydroxide - Bar soap and detergent production, drain cleaning, paper manufacturing, purification of bauxite ore prior aluminium production, artificial fibers production, oil refining.

Sodium Carbonate - Glass manufacturing, water softening, food additive, soap manufacturing, antiacid production.

Sodium Sulphate - Drugs for therapeutical use, wood pulp production in paper industry, soap and detergent production.

Potassium Nitrate - Fertilizer production, rocket propellant and gunpower production, wastewater treatment.

Potassium Chlorate - Oxygen-supply systems in aerospace applications.

Potassium Permanganate (VII) - Treatments of fungi and bacterial infections, wasterwater treatment and gastric irrigation.

Potassium Chloride - Hypoalkemia treatment, flavor enhancing in food.

IgorC [24]3 years ago
3 0

Explanation:

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Which of the following trophic levels is the highest?
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Calculate the molarity of each of the following solutions.
Charra [1.4K]

Answer:

a)1.56 M

b) 0.376 M

c) 0.599 M

Explanation:

Step 1: Molarity

Molarity = Number of moles / volume in L

Number of moles = mass / Molar mass

(a) 7.49 g of methanol (CH3OH) in 1.50 * 10² mL of solution

Volume =  1.50 * 10² mL = 0.15 L

Molar mass of CH3OH = 32.04 g/mol

Number of moles CH3OH = 7.49 grams / 32.04 g/mol

Moles of CH3OH = 0.234 moles

Molarity CH3OH = 0.234 moles / 0.15 L

Molarity CH3OH = 1.56 M

(b) 9.18 g of calcium chloride (CaCl2) in 2.20 × 10² mL of solution:

Volume = 2.20 × 10² mL = 0.22L

Molar mass of CaCl2 = 110.98 g/mol

Number of moles CaCl2 = 9.18 grams /110.98 g/mol

Moles CaCl2 = 0.0827 moles

Molarity CaCl2 = 0.0827 moles / 0.22L

Molarity CaCl2 = 0.376 M

(c) 6.51 g of naphthalene (C10H8) in 85.2 mL of benzene solution:

Volume = 85.2 mL = 0.0852L

Molar mass of C10H8 = 128.17 g/mol

Number of moles C10H8 = 6.51 grams / 128.17 g/mol

Moles C10H8 = 0.051 moles

Molarity C10H8 = 0.051 moles / 0.0852 L

Molarity C10H8 = 0.599 M

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PH is a measure of hydrogen ion concentration, a measure of the acidity or alkalinity of a solution.
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Answer:

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