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2 years ago

How can heat change matter from a solid to a liquid to a gas? Help ima mark Brainlyest!!

2 answers:

6 0

When applying heat the solid will eventually reach its melting point. Its then that the solid will slowly start to turn into a liquid due to the heat transfer. The process will only continue with even more heat piling up causing it to evaporate and become a gas.

Heat transfer comes in different ways depending on the solid:

either-

| | |

conduction

convection

radiation

- - - - -

this is all I know for now.

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Lucky me! We actually learned this in class today

I hope I helped in some way! :)

babymother [125]2 years ago

3 0

The heat energy breaks down the bonds between the molecules of the solid so the molecules become looser. Further hearing of the liquid causes the bonds to be broken down and the molecules will move further apart.

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A buffer can be prepared by mixing two solutions. Determine if each of the following mixtures will result in a buffer solution o

GenaCL600 [577]

Answer:

The answers are in the explanation

Explanation:

A buffer is the mixture of a weak acid with its conjugate base or vice versa. Thus:

1) Mixing 100.0 mL of 0.1 M HF with 100.0 mL of 0.05 M mol KF. Will result in a buffer because HF is a weak acid and KF is its conjugate base.

2) Mixing 100.0 mL of 0.1 M NH₃ with 100.0 mL of 0.1 M NH₄Br. Will not result in a buffer because NH₃ is a strong base.

3) Mixing 100.0 mL of 0.1 M HCN with 100.0 mL of 0.05 M KOH. Will result in a buffer because HCN is a weak acid and its reaction with KOH will produce CN⁻ that is its conjugate base.

4) Mixing 100.0 mL of 0.1 M HCl with 100.0 mL of 0.1 M KCl Will not result in a buffer because HCl is a strong acid.

5) Mixing 100.0 mL of 0.1 M HCN with 100.0 mL of 0.1 M KOH Will not result in a buffer because each HCN will react with KOH producing CN⁻, that means that you will have just CN⁻ (Conjugate base) without HCN (Weak acid).

I hope it helps!

6 0

3 years ago

2. How many grams of N2 are required to produce 10.0 grams of NH3? N2 + 3 H2 - 2 NH3

SOVA2 [1]

8.24g

Explanation:

Given parameters;

Mass of NH₃ = 10g

Unknown:

Mass of N₂ = ?

Solution:

Reaction equation:

N₂ + 3H₂ → 2NH₃

Step 1: Convert 10.0 g of NH₃ into moles of NH₃

number of moles = $\frac{mass}{molar mass}$

molar mass of NH₃ = 14 + 3(1) = 17g/mol

Number of moles = $\frac{10}{17}$ = 0.59mole

Step 2: Convert the moles of NH₃ calculated in Step 1 into moles of N₂

1 mole of N₂ produced 2 mole of NH₃

0.59 moles of ammonia would be formed by $\frac{0.59}{2}$ mole = 0.29mole of N₂

Step 3: Convert the moles of N₂ calculated in Step 2 into grams of N₂.

Mass of N₂ = number of moles x molar mass

Molar mass of N₂ = 14 x 2 = 28g/mol

Mass of N₂ = 0.29 x 28 = 8.24g

learn more:

Number of moles brainly.com/question/1841136

#learnwithBrainly

6 0

3 years ago

DESPERATE WILL GIVE BRAINLIST AND THANKS

Annette [7]

Answer:

20 grams

Explanation:

40g= 300

x = 150

cross multiply, 40*150/300

6000/300= 20g

8 0

2 years ago

A 650.0 mL solution contains 125 grams of glucose (C6H1206). If the molar mass of CGH1206 IS 180.16 g/mol, what is the molarity

VladimirAG [237]

Answer:

c) 1.07 M C6H1206

Explanation:

Molarity is the molar concentration of a solution, which is glucose in this case. It can be calculated using the following formula:

Molarity (M) = number of moles (n) ÷ volume (V)

Using mole = mass/molar mass, to calculate the number of moles of glucose in the solution, where mass = 125grams and MM = 180.16g/mol

mole = 125/180.16

mole = 0.694mol

Volume = 650.0 mL = 650/1000 = 0.650 L

Molarity = n/V

Molarity = 0.694/0.650

Molarity = 1.07 M

6 0

2 years ago

A sample of gas contains four gases (He, Ne, Ar, and Xe) with the following partial pressures: He (43 mm Hg), Ar (835 mm Hg), an

DIA [1.3K]

Answer:

Partial pressure of Ne = 366 mmHg

Explanation:

In a mixture, the sum of partial pressures for each gas, is the total pressure for the system.

Partial pressure He: 43 mmHg

Partial pressure Ar: 835 mmHg

Partial pressure Xe: 111 mmHg

Partial pressure Ne: ?

Total pressure = 1355 mmHg

43 + 835 + 111 + x = 1355

989 + x = 1355

x = 1355 - 989 → 366

6 0

3 years ago