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abruzzese [7]
3 years ago
12

A light wave traveling through an unknown medium strikes the boundary with

Chemistry
2 answers:
yanalaym [24]3 years ago
8 0
The unknown medium would be glass
Sever21 [200]3 years ago
5 0

Answer:

hello im breanna and i believe your answer is b.

Explanation:

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For the reaction 2Na + 2H20 - 2NaOH + H2 how many grams of sodium hydroxide are
ololo11 [35]

Answer:

Explanation:

Moles of sodium

=

130

⋅

g

22.99

⋅

g

⋅

m

o

l

−

1

=

5.65

⋅

m

o

l

.

Now you have the stoichiometric equation:

2

N

a

(

s

)

+

2

H

2

O

(

l

)

→

2

N

a

O

H

(

a

q

)

+

H

2

(

g

)

↑

⏐

If there are

5.65

⋅

m

o

l

of metal, clearly

5.65

⋅

m

o

l

2

dihydrogen gas are evolved......, i.e.

2.83

⋅

m

o

l

H

2

. Typically, in a question like this, you would also be asked to calculate the volume the gas occupies under standard conditions, and the

p

H

of the resultant solution (would it be high, low, neutral?).

3 0
4 years ago
Read 2 more answers
Radioactive isotopes have been used commercially in:
Law Incorporation [45]
 <span>Radioactive isotopes have been used commercially in all these applications.
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3 0
3 years ago
When do scientist rely on estimates
Brut [27]
Scientist rely on their estimates when they cannot obtain on exact numbers 

7 0
3 years ago
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Four states or phases of matter
Pie

Answer:

Solid, Liquid, Gas and, Plasma

Explanation:

A solid has a definite shape and volume. A liquid has a definite volume but takes the shape of its container. A gas lacks either a defined shape or volume. Plasma is similar to a gas in that its particles are very far apart, but gas is electrically neutral and plasma has a charge.

5 0
3 years ago
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A homerun in a baseball game was measured at 450 feet. How many meters is this equal to?
Kamila [148]

Answer:

137.16

Explanation:

4 0
4 years ago
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