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Brrunno [24]
3 years ago
15

Helppppppppppppppppppp me

Chemistry
1 answer:
masya89 [10]3 years ago
8 0
The answer is A.
A pure substance is pure, so it cannot be separated in most cases.
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The pressure needed to pump blood back to the heart is produced by the _____.
PolarNik [594]

Answer:

A. body muscles

The pressure needed to pump blood back to the heart is produced by the <u>body </u><u>muscles </u><u>.</u>

4 0
2 years ago
Use the drop-down menus to select the correct name for each of the organic compounds.
Molodets [167]

Answer:

Here's what I get  

Explanation:

CH₃CH₂CH₂CH₂CH₂CH₃ —  hexane

CH₂=CHCH₂CH₂CH₂CH₃ —  hex-1-ene is the preferred IUPAC name (PIN). 1-Hexene is accepted

CH₃C≡CCH₃ —  but-2-yne (PIN); 2-butyne is accepted

CH₃CH(CH₃)CH₂CH₂CH₃ — 2-methylpentane

CH₃CH₂CHCICH₂CH₃ — 3-chloropentane

5 0
3 years ago
Read 2 more answers
How many grams of NH3 can be produced from 12.0g of H2?
RSB [31]

Answer:

Balanced reaction:

3 H2 (g)  + N2 (g)  → 2 NH3 (g)

Use stoichiometry to convert g of H2 to g of NH3.  The process would be:

g H2 → mol H2 → mol NH3 → g NH3

12.0 g H2 x (1 mol H2 / 2.02 g H2) x (2 mol NH3 / 3 mol H2) x (17.03 g NH3 / 1 mol NH3) = 67.4 g NH3

Explanation: See above

Hope this helps, friend.

8 0
2 years ago
what is the greatest amount of bread rolls that can be made with 6 cups of flour And 3 cups of water? If this were a chemical re
forsale [732]

Answer:

if you tell me how much is needed and how much you have then i can answer it, but there is not enough information provided to answer to that question.

Explanation:

7 0
2 years ago
I need some advice, I know like this is random, and I can not do this cuz issa place for questions about school work and stuff,
alina1380 [7]

Answer:

well try talking to him first and being his friend. introduce yourself and try not to be too awkward or shy. can't reltate lol. after that if he really likes you, he'll initiate stuffs ^^

Explanation:

5 0
3 years ago
Read 2 more answers
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