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gulaghasi [49]
3 years ago
9

Which element would make a poor, brittle conductor? use the periodic table for help. a. sulfur b. boron c. cobalt d. calcium?

Chemistry
1 answer:
Greeley [361]3 years ago
8 0
I think the answer is C or B
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The consentration of a solution can be changed by _____ solute
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The concentration of a solution can be changed by adding solute. More solute=more concentrated
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3 years ago
PLEASE HELP!!!
lora16 [44]

Answer:

Yes; the graph shows a strong positive linear association.

Explanation:

Majority of the points outline a line of the graph. There are only a few outliers.

5 0
4 years ago
1. Why fractional distillation has<br> fractionating column but not in simple<br> distillation?
egoroff_w [7]

Answer:

  • <em>Fractional distillation leads to a better separation than simple distillation because the glass beads in the fractionating column provide "theoretical plates" on which the vapors can condense and then re-evaporate, and re-condense, essentially distilling the compound many times over.</em>

Explanation:

<h2> please mark me as brainlist </h2>
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3 years ago
1. Determine the number of significant figures in each of the following.
Nadya [2.5K]

Explanation:

a) 3 sig. figures

b) 3 sig. figures

c) 6 sig. figures

d) 2 sig. figures

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if it is 1.09 × 10^4, it is 10900 = 3 sig. figures

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4 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

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

#SPJ1

4 0
2 years ago
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