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Ann [662]
4 years ago
7

A/an _______ is a type of research that involves observation and collecting data but does not include a control. A. independent

variable B. experimentation C. dependent variable D. investigation
Chemistry
1 answer:
pantera1 [17]4 years ago
8 0
Should be D. an investigation
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Which is an example of how the body maintains homeostasis? by increasing thirst when cells are low on water by decreasing thirst
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Answer:

increasing thirst when cells need water

Explanation:

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6 0
3 years ago
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4 0
4 years ago
I don't know how to do this, pls help!
Aliun [14]
Cations from smallest to largest
Li⁺ ,Na⁺, K⁺ (from Periodic Table, the bigger number of period, the bigger size, of atom, so the bigger size of cation)

1) LiF smaller  cation then KF
1,036                                 <span>853
</span><span>The lattice energy increases as cations get smaller, as shown by LiF and KF.
</span><span>I think this one should be correct answer, because the compared substances have also the same anion, and we can compare cations in them.

2) The same cation Li , so wrong statement.

3)</span>The same cation Na , so wrong statement.

4) NaCl smaller cation then KF
  786                                   853
7 0
3 years ago
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Find the volume of 20g of H₂ at STP<br><br>​
ANEK [815]

Answer:224

Explanation:

We should answer it with Stoichiometry

We say: 20 g H2× (1 mol/ 2g)× ( 22.4 lit/ 1 mol) = 224

Means: we have 20 grams and every 2g H2, equals to 1 mol of it and every 1 mol of H2, equals to 22.4 lit( because of STP)

hope you got this:)

6 0
3 years ago
6. (1 point) What is the correct formula for sodium sulfate? *
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7)nonmetallic elements
10)mass
11) mole
* sorry I didn't know Q. 8/9
4 0
4 years ago
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