All categories

3 years ago

Gems called rubies are used in lasers. true or false

Chemistry

2 answers:

VLD [36.1K]3 years ago

8 0

True. There are such things as ruby lasers that use a synthetic ruby crystal as its gain medium.

matrenka [14]3 years ago

4 0

The answer you are looking for is true

You might be interested in

Pls help! I’m not very smart so please explain it to me!

Fantom [35]

Answer:

3.01 x 10²¹

Explanation:

Molar mass of h₂o =18.01528 g/mol.

it means 1 mole h₂o=18.01528 g .....(1)

1 mole = 6.022 × 10^23 molecules

so,

1 mole h₂o =6.022 × 10^23 molecules=18.01528 g [from 01]

now,

18.01528 g h₂o has= 6.022 × 10^23 molecules

9.00x10⁻² g h₂o has= ( 6.022 × 10^23 x 9.00x10⁻² ) /18.01528 molecules

=3.008 x 10²¹ molecules

≈ 3.01 x 10²¹ molecules

3 0

3 years ago

Read 2 more answers

Write the formula for calcium chloride

Sauron [17]

CaCI2 is for calcium chloride

7 0

4 years ago

6. Un volumen de 1.0 mL de agua de mar contiene casi 4 x 10-12 g de Au. El volumen total de agua en los océanos es de 1.5 x 1021

Aleks [24]

Answer:

The total amount of Au is $ $2.0\times10^{24}$

Explanation:

Given that,

Mass of 1.0 ml of Au $m=4\times10^{-2}\ g$

Total volume of water in oceans $V=1.5\times10^{21}\ L$

We need to calculate the volume in ml

Using given volume

$V=1.5\times10^{21}\times1000\ mL$

$V=1.5\times10^{24}\ mL$

We need to calculate the total mass of Au

Using given data

$1\ ml\ volume = 4\times10^{-2}\ g$

$1.5\times10^{24}\ ml=4\times10^{-2}\times1.5\times10^{24}$

So, The total mass of Au is $6\times10^{22}\ g$

The mass will be in ounce,

$Mass=0.035274\times6\times10^{22}$

$Mass=2.12\times10^{21}\ ounce$

The total amount of the Au Will be

$Total\ amount=2.12\times10^{21}\times948$

$Total\ amount=2.0\times10^{24}$

Hence, The total amount of Au is $ $2.0\times10^{24}$

3 0

3 years ago

Which two philosophers challenged Democritus?

nadezda [96]

Answer:

I don't know the second one but one of them is Aristotle

5 0

3 years ago

Read 2 more answers

What is white light?

PSYCHO15rus [73]

White light is when red, orange, and yellow are absorbed.

8 0

3 years ago