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Jlenok [28]
3 years ago
15

3) How many grams of calcium hydroxide are necessary to create 49.5 mL of a 1.55 M solution?

Chemistry
1 answer:
egoroff_w [7]3 years ago
8 0

Answer:

5.68g

Explanation:

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What best describes the advantage of using the model of a food web?
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Answer:

Hello, Otaku Kun Here! >:3

Explanation:

What Best describes the advantage of using the model of a food web? 1. Shows feeding connections 2. Explains every detail of wildlife 3. Shows a complex mental model 4. Represents data collected from space

<em>hope this helps!</em>

<em>from: Otaku Kun! ^^</em>

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3 years ago
Perform the following
vivado [14]
The correct number of significant figures and digits is 3
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3 years ago
How do you determine the volume of an irregular object if you don't know the density?
Galina-37 [17]

Answer:

You can find the volume of an irregular object by immersing it in water in a beaker or other container with volume markings, and by seeing how much the level goes up.

Explanation:

8 0
4 years ago
The si unit used to measure the activity of a radioactive sample is called the
maks197457 [2]
How is the activity of a radioactive sample measured? In terms of the number of nuclear disintegrations per second. The Curie (Ci) is the unit used commonly, the Becquerel is the SI unit. The number of nuclear disintegrations that occurs in 1 second for 1 gram of radium, which is 3.7 x 10^10 disintegrations.
8 0
3 years ago
please help, ive been putting 3 for the coefficient and 14 for the exponent but, it keeps saying it’s wrong. any help is appreci
ELEN [110]

Answer:

3 × 10¯¹⁰

Explanation:

9×10² ÷ 3×10¹²

The above expression can be evaluated as follow:

9×10² ÷ 3×10¹²

Recall:

3² = 9

3¹ = 3

Therefore,

9×10² ÷ 3×10¹² = 3²×10² ÷ 3¹×10¹²

Recall:

y^m ÷ y^n = y^(m – n)

Therefore,

3²×10² ÷ 3×10¹² = 3²¯¹ × 10²¯¹²

= 3¹ × 10¯¹⁰

Recall:

y¹ = y

Therefore,

3¹ × 10¯¹⁰ = 3 × 10¯¹⁰

Therefore,

9×10² ÷ 3×10¹² = 3 × 10¯¹⁰

6 0
3 years ago
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