All categories

3 years ago

9. How can you dissolve more gas, in a solution?

Chemistry

1 answer:

horrorfan [7]3 years ago

5 0

Answer: The solubility of a gas in a liquid will increase

Explanation: Lower the temperature of the solution , and therefore, lower the kinetic energy of the gaseous particles so they can escape the liquid phase less often

You might be interested in

Caffeine is a compound found in some natural coffees and teas and in some colas. a. Determine the empirical formula for caffeine

andrey2020 [161]

Answer: The molecular formula will be $C_8N_4H_{10}O_2$

Explanation:

Mass of C= 49.47 g

Mass of N = 28.85 g

Mass of O = 16.48 g

Mass of H = 5.20 g

Step 1 : convert given masses into moles.

Moles of C = $\frac{\text{ given mass of C}}{\text{ molar mass of C}}= \frac{49.47g}{12g/mole}=4.12moles$

Moles of N = $\frac{\text{ given mass of N}}{\text{ molar mass of N}}= \frac{28.85g}{14g/mole}=2.06moles$

Moles of O = $\frac{\text{ given mass of O}}{\text{ molar mass of O}}= \frac{16.48g}{16g/mole}=1.03moles$

Moles of H = $\frac{\text{ given mass of H}}{\text{ molar mass of H}}= \frac{5.20g}{1g/mole}=5.20moles$

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For C = $\frac{4.12}{1.03}=4$

For N = $\frac{2.06}{1.03}=2$

For O = $\frac{1.03}{1.03}=1$

For H = $\frac{5.20}{1.03}=5$

The ratio of C : N: O: H = 4: 2: 1: 5

Hence the empirical formula is $C_4N_2OH_5$

The empirical weight of $C_4N_2OH_5$ = 4(12)+2(14)+1(16)+5(1)= 97 g.

The molecular weight = 194.19 g/mole

Now we have to calculate the molecular formula.

$n=\frac{\text{Molecular weight}}{\text{Equivalent weight}}=\frac{194.19}{97}=2$

The molecular formula will be = $2\times C_4N_2H_5O=C_8N_4H_{10}O_2$

5 0

3 years ago

Crystal structures with ions must have ____________.a. a positive chargeb. a negative chargec. electrical neutralityd. a 2+ char

Inessa05 [86]

Answer:

c. electrical neutrality.

Explanation:

A crystalline solid possesses a rigid and long-range order; its atoms, molecules, or ions occupy specific positions. The arrangement of such particles in a crystalline solid is such that the net attractive intermolecular forces are at their maximum.

Ionic crystals, particularly, have two important characteristics:

(1) They are composed of charged species.

(2) Anions and cations are generally quite different in size.

The forces holding the atoms together are electrostatic attractions. Examples of these types of crystals include NaCl, LiF, MgO, CaCO₃.

Since they are composed of anions and cations, in stoichiometric amount, they are to be said electrically neutral.

8 0

3 years ago

Consider the reaction 2xy+z2⇌2xyz which has a rate law of rate= k[xy][z2] select a possible mechanism for the reaction.

Tasya [4]

We can dictate the mechanism of the reaction by looking at the exponents of the reactants in the reaction rate equation. Since [xy] has an exponent of 1, then the reaction follows the first order reaction with respect to xy. Similarly, the reaction follows the first order with respect to z₂. Then, the overall is the sum of each of their orders which is 2.

6 0

3 years ago

Read 2 more answers

An isolated insulated cylinder contains 15.40 grams of neon gas and a 62.30-gram bronze medal in thermal contact. When the bronz

Katen [24]

Answer:

its 57.56

Explanation:

dont ask me how it is just is trust me

5 0

3 years ago

What is the correct name for a molecule containing 2 nitrogen and 4 oxygen?

Yuki888 [10]

Dinitrogen tetroxide

3 0

3 years ago