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damaskus [11]
3 years ago
11

Fill in the blank

Chemistry
1 answer:
Elena-2011 [213]3 years ago
7 0

Answer:

1. plasma; 2. qualitative; 3. matter;

Explanation:

<em><u>PLASMA </u></em>is a gaseous state of matter that contains appreciable numbers of electrically charged particles.

Diamond is harder than graphite. This is a <em><u>QUALITATIVE </u></em>observation.

Chemistry is defined as the study of <em><u>MATTER</u></em>.

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12.A piece of magnesium is in the shape of a cylinder with a height of 5.62 cm
yaroslaw [1]

Answer:

Density, d = 1.779 g/cm³

Explanation:

The density of a material is given by its mass per unit volume.

Here, height of a piece of magnesium cylinder, h = 5.62 cm

Its diameter, d = 1.34 cm

Radius = 0.67 cm

Volume of he cylinder,

V=\pi r^2 h\\\\\text{Putting the value of r and h, we get :}\\\\V=(\pi \times (0.67)^2\times 5.62)\ cm^3

d=\dfrac{m}{V}\\\\d=\dfrac{14.1\ g}{(\pi \times (0.67)^2\times 5.62)\ cm^3}\\\\d=1.779\ g/cm^3

So, the density of the sample is 1.779 g/cm³.

4 0
3 years ago
Can animals detect radio waves
Svetach [21]

Answer:

No.

Explanation:

No organism can detect X-rays or radio waves

4 0
2 years ago
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Which subatomic particle of an atom never changes?
AlexFokin [52]
Protons are one of the fully stable parts of matter
8 0
3 years ago
If the density of a liquid 102g/cm^3, how many milligrams will be in 63 mL of that liquid?
Ede4ka [16]

Answer:

<h2>6426000 mg</h2>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

From the question

63 mL = 63 cm³

We have

mass = 102 × 63 = 6426

But 1 g = 1000 mg

6426 g = 6426000 mg

We have the final answer as

<h3>6,426,000 mg</h3>

Hope this helps you

6 0
3 years ago
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