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eimsori [14]
4 years ago
9

Why should reference materials be current?

Chemistry
1 answer:
postnew [5]4 years ago
6 0

Answer:

The best answer is A.

(Newton’s “Mathematica” is not exactly new, and not filled with errors).

Explanation:

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Help i’m taking a test!!
pogonyaev

Answer:

Element Z

Explanation:

I hope this is correct and helps you!

5 0
3 years ago
Solve the following problem. Give your answer to the correct number of significant figures. a. 20.0 meters x 0012.65 meters b. 0
Nezavi [6.7K]

Explanation:

For multiplication or division, the rule is to count the number of significant figures in each number being multiplied or divided and then limit the significant figures in the answer to the lowest count.

a. 20.0 meters x 0012.65 meters

The numbers are;

20.0 (3 s.f) and 12.65 (4 s.f)

The multiplication gives; 253

Since 253 is already in 3 s.f, that's the answer.

b. 002.5 × 103 meters + 3.50 × 102 meters

The numbers are;

002.5 (2 s.f), 103 (3 s.f), 3.50 (3 s.f) and 102 (3 s.f)

002.5 × 103 = 257.5 = 260 (2 s.f)

3.50 × 102 = 357 = 360 (2 s.f)

260 + 360 = 620

4 0
3 years ago
Problema 5
malfutka [58]

Answer:

dwwq is a lot more than a lot more than a year ago and I am a very young ers and I

33rd century fox was a great place to girl and I was a little bit older than a couple of years ago and I was a little bit older than I was a little bit older than I was a little bit older than I was a little bit older than I was a little bit older than I was a little bit older than I was a little bit older than I was a little bit older than I was a little bit

Explanation:

read the full article below to see how the upper c and other factors of a child are at risk for the child or child care act and a lot 5AM in 555inches of a child is filtration of a single person who is filtration

4 0
3 years ago
What qualities can be used to identify binary covalent compounds?
alexandr402 [8]
Either covalent compounds are neutral, covalent compounds share electrons
3 0
4 years ago
Dichlorine heptoxide (C1 2 0 7) is a
Setler [38]

Answer:

Identify the "given" information and what the problem is asking you to "find."

Given : Cl2O7

Find: % Composition (% Cl and %O)

List other known quantities.

Mass of Cl in 1 mol Cl2O7 , 2 Cl : 2 x 35.45 g = 70.90 g

Mass of O in 1 mol Cl2O7 , 7 O: 7 x 16.00 g = 112.00 g

Molar mass of Cl2O7 = 182.90 g/mol

8 0
3 years ago
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