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frez [133]
3 years ago
9

Which two properties are used to define matter?

Chemistry
1 answer:
iren2701 [21]3 years ago
5 0
Has mass and occupies space. 
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Pollution comes from<br> many small sources.
Akimi4 [234]

Answer:

Nonpoint-source-pollution

Explanation:

7 0
3 years ago
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Which compound will precipitate when solutions of iron(II) acetate, Fe(C2H3O2)2, and potassium iodide (KI) are mixed?
oksano4ka [1.4K]
FeI2 (B). Group 1 elements (K) dissociate completely, so KCH3CO2 will become K+ and CH3CO2- . Fe2+ and I- don't dissociate in water, so you get FeI2(s) precipitate.
8 0
3 years ago
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How many liters of hydrogen gas is formed from the complete reaction of 15.2 g C? Assume that the hydrogen gas is collected at a
ira [324]

Answer:

38 L

Explanation:

There is some info missing. I think this is the original question.

<em>Consider the chemical reaction: C(s) + H₂ O(g) ⟶ CO(g) + H₂ (g). How many liters of hydrogen gas is formed from the complete reaction of 15.2 g C? Assume that the hydrogen gas is collected at a pressure of 1.0 atm and a temperature of 360 K.</em>

<em />

Step 1: Write the balanced equation

C(s) + H₂ O(g) ⟶ CO(g) + H₂ (g)

Step 2: Calculate the moles corresponding to 15.2 g of C

The molar mass of C is 12.01 g/mol.

15.2g \times \frac{1mol}{12.01g} = 1.27 mol

Step 3: Calculate the moles of H₂ produced from 1.27 moles of C

The molar ratio of H₂ to C is 1:1. The moles of H₂ produced are 1/1 × 1.27 mol = 1.27 mol.

Step 4: Calculate the volume of H₂

We will use the ideal gas equation.

P \times V = n \times R \times T\\V = \frac{n \times R \times T}{P} = \frac{1.27mol \times \frac{0.0821atm.L}{mol.K}  \times 360K}{1.0atm}= 38 L

3 0
4 years ago
The equilibrium constant is given for one of the reactions below.
Cerrena [4.2K]

Answer:

12.7551

Explanation:

The given chemical equation follows:

2HD(g)\rightarrow H_2(g)+D_2(g)

The equilibrium constant for the above equation is 0.28.

We need to calculate the equilibrium constant for the reverse equation of above chemical equation, which is:

2H_2(g)+2D_2(g)\rightarrow 4HD(g)

The equilibrium constant for the reverse reaction will be the reciprocal of the initial reaction.

If the equation is multiplied by a factor of '2', the equilibrium constant of the reverse reaction will be the square of the equilibrium constant  of initial reaction.

The value of equilibrium constant for reverse reaction is:

K_{eq}'=(\frac{1}{0.28})^2

<u>Hence, the value of equilibrium constant for reverse reaction is 12.7551.</u>

3 0
4 years ago
What type of bond is in aluminum sulfate?
ratelena [41]
That's actually a polyatomic Ion, so it's an Ionic bond, because Aluminum is a metal, and sulfate is a covalent compound. 
4 0
3 years ago
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