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Anuta_ua [19.1K]
3 years ago
7

PLEASE ANSWER

Chemistry
1 answer:
lana [24]3 years ago
3 0

Answer: option D. Their speed in a vacuum

Explanation:

Electromagnetic waves all have same speed in vacuum. This speed has been calculated to be 3x10^8m/s.

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Sodium oxide reacts with water to make sodium hydroxide.
Vlada [557]

Answer:

So the total mass is 50 plus 150 grams the heat capacity 4.18 joules per gram per degree C. And the temperature change is 36 minus 25 and so we can calculate Delta H for the reaction that takes place.

Explanation:

3 0
2 years ago
How many grams of C6H12O6 are needed to be dissolved in water to make 100. grams of a 250. ppm solution?
Vesna [10]

Answer:

0.025 g C6H12O6

Explanation:

ppm = (g solute/ g solution)* 10^6

g solute= (ppm * g solution)/ 10^6

g solute = (250 ppm * 100 g)/10^6

g solute=0.025 g C6H12O6

4 0
3 years ago
Enlist any four examples of chemical change ?
masha68 [24]

Answer:

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What is a common land form that is formed when chemical weathering, specifically carbonation, is taking place?
skad [1K]

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Question 34 (1 point)
Grace [21]

Answer:

8.33 atm

Explanation:

Xe is   5  out of (4+5)   or   5 / 9 ths of the gas present

  5/9  * 15 atm = 8.33 atm

4 0
1 year ago
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