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ehidna [41]
3 years ago
6

The purpose of controlling certain values so that the values remain the same is to: A. simplify the experimental analysis. B. si

mplify the experimental procedure. C. decrease the error of an experiment. D. increase the validity of an experiment
Chemistry
1 answer:
kirza4 [7]3 years ago
6 0
C. Decrease the error of an experiment
By haveing a control group you take out possible errors of the experiment
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(1-6) Which of the electron movements shown below (A, B, C, or D) will emit the highest energy light?
Lapatulllka [165]

Answer:

I would say D (not sure tho)

Explanation:

7 0
3 years ago
In any chemical reaction, the rate of the reaction can be increased by
myrzilka [38]

Answer:Increasing the concentration of reactants generally increases the rate of reaction because more of the reacting molecules or ions are present to form the reaction products. This is especially true when concentrations are low and few molecules or ions are reacting.

Explanation:

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3 years ago
Why is a ylid a stable nucleophile? Select all that apply. Group of answer choices The proximity of the positively charged phosp
pogonyaev

Answer:

1)The proximity of the positively charged phosphorous and negatively charged carbon stabilizes the charges.

2) Inductive effects and resonance stabilize the negative charge

Explanation:

both atoms have full octets of electrons( I.e Carbon and say phosphorus). The result can be viewed as a structure in which two adjacent atoms are connected by both a covalent and an ionic bond; normally written X+–Y−. Ylides are thus 1,2-dipolar compounds, and a subclass of zwitterions

6 0
3 years ago
How many molecules are in 5.75 mol HBr
DerKrebs [107]

Answer:

3.46 x 10²⁴ molecules.

Explanation:

  • <em>Knowing that every one mole of a substance contains Avogadro's no. of molecules (NA = 6.022 x 10²³).</em>

<em><u>Using cross multiplication:</u></em>

1.0 mole of HBr → 6.022 x 10²³ molecules.

5.75 mole of HBr → ??? molecules.

∴ The no. of molecules of HBr are in 5.75 mol = (6.022 x 10²³ molecules) ( 5.75 mole) / (1.0 mol) = 3.46 x 10²⁴ molecules.

7 0
3 years ago
Read 2 more answers
1. A sample of radon has a half-life of 15 hours. What fraction of the sample is left
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I think I learned this
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