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PSYCHO15rus [73]
3 years ago
7

Molar mass is measured in units of

Chemistry
1 answer:
blsea [12.9K]3 years ago
5 0
D. grams/ mole.
........
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Is anyone good at chemistry if so can someone help me please ?<br><br> (NO LINKS)
V125BC [204]

So, litmus paper is a qualitative tool for assessing the acidity or basicity of a substance (usually a solution). In general, blue litmus turns red in the presence of an acid, and red litmus turns blue in the presence of a base. They can't really tell you much more than that.

The solutions that are most likely acids are those that turn blue litmus red <em>and </em>do not evoke a color change in red litmus. A solution that turns red litmus blue <em>or </em>does not evoke a color change in blue litmus is likely not an acid. Using these criteria, solutions 4 and 7 are most likely acids since they both turn blue litmus red (and they cause no color change in red litmus).

The correct answer choice would thus be D.

4 0
3 years ago
When sodium metal is added to water, the following reaction occurs:
zheka24 [161]

Answer:

d. n H2(g) = 0.034 mol

Explanation:

  • 2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g)

                              2 - Na - 2

                              4 - H - 4

                               2 - O - 2

∴ n Na(s) = 0.068 mol

⇒ n H2(g) = ( 0.068 mol Na(s) )( mol H2(g) / 2 mol Na(s) )

⇒ n H2(g) = 0.034 mol

8 0
3 years ago
How many elements have to be present for a compound to form?
mariarad [96]
Two or more different elements
5 0
3 years ago
What happens if more product is added to a system at equalibrium
telo118 [61]

Answer:

When additional product is added, the equilibrium shifts to reactants to reduce the stress. If reactant or product is removed, the equilibrium shifts to make more reactant or product, respectively, to make up for the loss.

5 0
3 years ago
Ratio of nitrogen gas to helium
GarryVolchara [31]

Answer:

1 to 696

The expansion ratio of liquefied and cryogenic from the boiling point to ambient is: nitrogen 1 to 696. liquid helium 1 to 757. argon 1 to 847.

Explanation:

4 0
3 years ago
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