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9966 [12]
3 years ago
13

Can the ratio of hydrogen to oxygen change if a solute is dissolved in the water

Chemistry
1 answer:
coldgirl [10]3 years ago
4 0

Answer:

Water molecules feature the combinations of hydrogen and oxygen atoms in a 2:1 ratio. Since they are present in a fixed ratio of mass, water molecules obey the law of constant proportions. Water is formed when two molecules of the diatomic hydrogen gas, combine with one molecule of the diatomic oxygen gas to produce two molecules of water

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The density of gold is approximately .1785 g/L. What is the mass of a sample of helium that occupies 50.0 L of space? Round your
Olegator [25]
What is the purpose for golds density?
7 0
3 years ago
HELP 20 POINTS
REY [17]
The answer is 30.84
4 0
3 years ago
What is the volume of 40.0 grams of argon gas at STP ?
MrRa [10]

Answer:

24.9 L Ar

General Formulas and Concepts:

<u>Atomic Structure</u>

  • Reading a Periodic Table
  • Moles
  • STP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 K

<u>Aqueous Solutions</u>

  • States of Matter

<u>Stoichiometry</u>

  • Using Dimensional Analysis

Explanation:

<u>Step 1: Define</u>

[Given] 40.0 g Ar

[Solve] L Ar

<u>Step 2: Identify Conversions</u>

[PT] Molar Mass of Ar - 39.95 g/mol

[STP] 22.4 L = 1 mol

<u>Step 3: Convert</u>

  1. [DA] Set up:                                                                                                       \displaystyle 40.0 \ g \ Ar(\frac{1 \ mol \ Ar}{39.95 \ g \ Ar})(\frac{22.4 \ L \ Ar}{1 \ mol \ Ar})
  2. [DA] Divide/Multiply [Cancel out units]:                                                         \displaystyle 24.9235 \ L \ Ar

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

24.9235 L Ar ≈ 24.9 L Ar

5 0
3 years ago
How many grams of Al would be needed to displace all of the copper ions in 71.8 mL of 0.610 M CuSO4?
Galina-37 [17]

The amount of Al that would be needed will be 0.79 grams

<h3>Stoichiometric calculations</h3>

From the equation of the reaction below:

2 Al + 3 CuSO_4 --- > Al_2(SO_4)_3 + 3 Cu

The mole ratio of Al to CuSO_4 is 2:3.

Mole of 71.8 mL. 0.610 M  CuSO_4 = 0.610 x 71.8/1000 = 0.0438 moles

Equivalent mole of Al = 2/3 x 0.0438 = 0.029 moles

Mass of o.o29 moles Al = 0.029 x 26.98 = 0.79 grams

More on stoichiometric calculations can be found here: brainly.com/question/27287858

#SPJ1

4 0
2 years ago
How do I know how many electrons an element has to gain and l<br> ose to become stable
adell [148]
You proteins and electrons have to be balanced like if you have 18+ you need 18- for it to be stable I hope you understand
3 0
4 years ago
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