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3 years ago

Which causes an increase in greenhouse gases?

Chemistry

2 answers:

kirill [66]3 years ago

6 0

Answer:

Explanation:

Took the test on egde

zaharov [31]3 years ago

6 0

Answer:

C: burning of wood and coal

Explanation:

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For dilute aqueous solutions in which the density of the solution is roughly equal to that of the pure solvent, the molarity of

EleoNora [17]

Explanation:

Given: Molarity = 0.01 M

Let the volume of the solution = 1 L

Hence, moles = 0.01 moles (Molarity*Volume)

Molar mass of urea = 60 g/mol

So, mass of urea = moles x molar mass = 0.01 moles x 60 g/mol = 0.6 g = 0.0006 kg ,

Given: Density of solvent = Density of solution = 1 Kg/liter (Water).

So,

The mass of solution = vol x density = 1 L x 1 kg/L= 1 kg

Also,

Mass of solution = Mass of solute + Mass of solvent

1 kg= 0.0006 kg + mass of solvent

Mass of solvent = 1-0.0006 = 0.9994 kg

Molality is the moles of solute present in 1 kg of the solvent. So,

Molaity = ( 0.01/0.9994) ≈ 0.01 m

Molarity = Molality

Hence proved.

3 0

4 years ago

What is the definition for molarity?

Akimi4 [234]

Molarity is a concentration unit, the number of moles of solute divided by the numbers of liters in a solution. Pertaining to chem

7 0

4 years ago

Read 2 more answers

Ethane, C2H6, can be formed by reacting acetylene, C2H2, with hydrogen gas as follows: C2H2(g) H2(g) ⇌ C2H6(g) Exothermic What c

Pavel [41]

Answer:

Equilibrium shifts to the right

Explanation:

An exothermic reaction is one in which temperature is released to the environment. Hence, if the reaction vessel housing an exothermic reaction is touched after reaction completion, we will notice that the reaction vessel e.g beaker is hot.

To consider the equilibrium response to temperature changes, we need to consider if the reaction is exothermic or endothermic. In the case of this particular question, it has been established that the reaction is exothermic.

Heat is released to the surroundings as the reactants are at a higher energy level compared to the products. Hence, increasing the temperature will favor the formation of more reactants and as such, the equilibrium position will shift to the left to pave way for the formation of more reactants. Thus , more acetylene and hydrogen would be yielded

8 0

3 years ago

Iron has a density of 7.86 g/cm^3 (1 cm^3=1 mL). Calculate the volume (in dL) of a piece of iron having a mass of 4.62 kg . Note

s2008m [1.1K]

Density is mass over volume. The density of iron is given in g/cm³

we have to first convert g/cm³ to kg/dL.

1000 g = 1 kg and 100 cm³ = 1 dL

the mass of 1 cm³ = 1 g

the mass of 100 cm³ / 1 dL = 100 g

then mass of 1 dL in kg is = 100 g / 1000 g/kg = 0.1 kg

volume of 0.1 kg is 1 dL

therefore density of iron is 7.86 g/cm³ x 0.1 kg/dL / g/cm³ = 0.786 kg/dL

volume of iron having mass 0.786 kg is 1 dL

then volume of iron having a mass of 4.62 kg is - 1 dL / 0.786 kg x 4.62 kg = dL

volume of iron is 5.88 dL

3 0

3 years ago

Answer 14 and 18 please

Allushta [10]

14 is C but I cannot see the other one

4 0

3 years ago