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3 years ago

7

21,980 mg of phosphorus reacts in a gas jar containing oxygen. The resulting oxide weighed 50.000 g. The percent composition of

oxygen in this compound is 43.97%. FALSE or TRUE

1 answer:

stealth61 [152]3 years ago

8 0

Answer: False

Explanation:

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What unit is a wave velocity measured in

Ivahew [28]

Answer:

radians

Explanation:

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Read 2 more answers

1. A 225-L barrel of white wine has an initial free SO2 concentration of 22 ppm and a pH of 3.70. How much SO2 (in grams) should

Alexandra [31]

Answer:

The appropriate answer is "9.225 g".

Explanation:

Given:

Required level,

= 63 ppm

Initial concentration,

= 22 ppm

Now,

The amount of free SO₂ will be:

= $Required \ level -Initial \ concentration$

= $63-22$

= $41 \ ppm$

The amount of free SO₂ to be added will be:

= $41\times 225$

= $9225 \ mg$

∵ 1000 mg = 1 g

So,

= $9225\times \frac{1}{1000}$

= $9.225$

Thus,

"9.225 g" should be added.

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2 years ago

What scale do we use to measure how acid or alkali something is

aniked [119]

The pH scale is used to measure how acidic or alkaline something is.

Hope that helped you!
BRAINLIEST??

4 0

3 years ago

Nimfa-mama [501]

Answer:

energy that freely moves from one place to another. It is responsible for vibration of particles of matter

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3 years ago

Water is a pure substance. Which of the following is true about water? (4 points) Its compounds can only be physically separated

jonny [76]

Answer:

Water/H20 is a compound made of hydrogen and oxygen. Although water is the most abundant substance on earth, it is rarely found naturally in its pure form. Most of the time, pure water has to be created. Pure water is called distilled water or deionized water.

Explanation:

7 0

3 years ago