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Marta_Voda [28]

3 years ago

12

1. The journey from earth to the nearest ___________ will take the longest.

1 answer:

aivan3 [116]3 years ago

4 0

The journey from earth to the nearest plant will take the longest

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How is heating of sugar and heating of ammonium chloride different from each other? Explain your answer.

algol13

When sugar is heated it melts and then caramelize giving of water. After this, it turns blank (carbon) and then coverts to co2 (carbon dioxide) .
So, heating of sugar is an endothermic , decomposition and oxidation reaction.
When Ammonium Chloride is heated , it directly goes from solid state to vapour state without changing into liquid state.
So, heating of Ammonium Chloride is an example of sublimation reaction.

3 0

3 years ago

What is the formula of iron(iii) oxide?

SCORPION-xisa [38]

Answer:

Fe2O3

Explanation:

8 0

2 years ago

Read 2 more answers

Ionic, covalent and metallic. How many of these can form giant structures?

Elena L [17]

Answer:

covalent

Explanation:

7 0

1 year ago

Calculate the mass of oxygen gas (O2) dissolved in a 5.00 L bucket of water exposed to a pressure of 1.13 atm of air. Assume the

Ilia_Sergeevich [38]

Answer:

The mass of oxygen gas dissolved in a 5.00 L bucket of water exposed to a pressure of 1.13 atm of air is 0.04936 grams.

Explanation:

Henry's law states that the amount of gas dissolved or molar solubility of gas is directly proportional to the partial pressure of the liquid.

To calculate the molar solubility, we use the equation given by Henry's law, which is:

$C_{gas}=K_H\times p_{gas}$

where,

$K_H$ = Henry's constant =

$p_{O_2}$ = partial pressure of oxygen

We have :

Pressure of the air = P

Mole fraction of oxygen in air = $\chi_{O_2}=0.210$

$p_{O_2}=P\times \chi_{O_2}$

$=0.210\times 1.13 atm= 0.2373 atm$

$K_H$ = Henry's constant = $1.30\times 10^{-3}M/atm$

Putting values in above equation, we get:

$C_{O_2}=1.30\times 10^{-3}M/atm\times 0.2373 atm\\\\C_{O_2}=0.003085 M$

Moles of oxygen gas = n

Volume of water = V = 5 L

$Molarity = \frac{Moles}{Volume(L)}$

$0.003085 M=\frac{n}{5 L}$

$n = 0.003085 M\times 5 L=0.001542 mol$

Mass of 0.001542 moles of oxygen gas:

0.001542 mol × 32 g/mol = 0.04936 g

The mass of oxygen gas dissolved in a 5.00 L bucket of water exposed to a pressure of 1.13 atm of air is 0.04936 grams.

5 0

2 years ago

A hydrated sample of cobalt(II) chloride was analyzed and found to consist of 45.44% water. What is the formula of the hydrate

valina [46]

Answer: the formula of the hydrate is CoCl2.6H2O

Explanation:Please see attachment for explanation

7 0

3 years ago