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3 years ago

11

Name two compounds in unpolluted air?

1 answer:

goblinko [34]3 years ago

6 0

Nitrogen and oxygen are in unpolluted air

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K2CrO4 is added to a solution containing lead (II) and barium ions. If a precipitate is formed, what is it?

Step2247 [10]

Answer:

Lead (II) Chromate and Barium Chromate

Explanation:

5 0

2 years ago

H. Nitrogen gas and hydrogen gas combine to produce ammonia gas (NH3).

DedPeter [7]

Answer:

<u>27.3 L</u>

Explanation:

<u>Reaction</u>

N₂ (g) + 3H₂ (g) ⇒ 2NH₃ (g)
This is the basic reaction at STP

<u>Solving</u>

10 g N₂ x 1 mol NH₃/28 g N₂ x 3 mol H₂/1 mole N₂
⇒ 1.07 mol H₂

V = nRT/P [From Ideal Gas Equation]
V = 1.07 x 62.36 x 298 K / 735
V = <u>27.3 L</u>

4 0

2 years ago

The rate at which an electrical device converts energy from one form to another is called what

zlopas [31]

It is called a watt and or wattage

7 0

2 years ago

Each period in the periodic table corresponds to a

Rudiy27

Each correspond to a principal energy level

4 0

3 years ago

Read 2 more answers

The monovalent salt concentration (the predominant solute in the blood cell) for a sample of red blood cells is 0.13 moles/liter

11111nata11111 [884]

Answer:

The osmotic pressure of cell is $648.3$ KPa

Explanation:

As we know the osmotic pressure is equal to

$\pi = icRT$

Where

i is the Van Hoff factor

c is the concentration of solution

R is the ideal gas constant

and T is the temperature.

Substituting the given values, we get -

$\pi = 2 * 0.13 * 0.08206 * 300\\$

$\pi = 648.3$ KPa

4 0

2 years ago