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tangare [24]
3 years ago
12

X = (2 x 103)(7 x 105)

Chemistry
2 answers:
Zina [86]3 years ago
8 0
A. 1.4 x 10^9


Explanation: Use pemdas
Do the exponents first then do what’s inside the parentheses and multiply them by each other
Sonbull [250]3 years ago
3 0

Answer:

x=1.4*10^9

or choice a

Hope this helps and please mark me brainliest! <3 >//<

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A sample of nitrogen occupies 10.0 liters at 25°C what would be the new volume at 20°C? 7.9 L Ob 9.8 L 10.2 L 10.6 L
PtichkaEL [24]

Answer:

  9.4 liter

Explanation:

1) Data:

V₁ = 10.0 L

T₁ = 25°C = 25 + 273.15 K = 298.15 K

 P₁ = 98.7 Kpa

 T₂ = 20°C = 20 + 273.15 K = 293.15 K

  P₂ = 102.7 KPa

  V₂ = ?

2) Formula:

Used combined law of gases:

  PV / T = constant

  P₁V₁ / T₁ = P₂V₂ / T₂

3) Solution:

Solve the equation for V₂:

  V₂ = P₁V₁ T₂ / (P₂ T₁)

Substitute and compuite:

V₂ = P₁V₁ T₂ / (P₂ T₁)

V₂ = 98.7 KPa × 10.0 L × 293.15 K / (102.7 KPa × 298.15 K)

V₂ =  9.4 liter ← answer

You can learn more about gas law problems reading this other answer on

Explanation:

7 0
2 years ago
the half life for strontium-90 is 29 years. how many half-lives did the sample go through at the end of 87 year​
Nesterboy [21]
90 divided by 29 x 87 = 290
4 0
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Parents should avoid sharing their own mistakes with children. True/false
Vesna [10]
Parents SHOULDN'T avoid sharing their own mistakes with children.
6 0
3 years ago
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What happens as a result of the photoelectric effect? A.light is produced
Brrunno [24]

Answer:

photoelectric effect, phenomenon in which electrically charged particles are released from or within a material when it absorbs electromagnetic radiation. The effect is often defined as the ejection of electrons from a metal plate when light falls on it.

3 0
1 year ago
Using your knowledge of Greek and Latin roots and affixes, what does "synchronize" mean?
Ksenya-84 [330]

Answer:

"Synchronize" means to place together in terms of time and manner.

Explanation:

  • In the word 'synchronize' the prefix added is 'syn'.
  • The prefix 'syn' has been derived from the Greek language.
  • The prefixes 'syn' and 'sym' are equivalent in terms of their meanings.
  • The meaning of the prefix is to put 'together'.
  • The words formed by adding the prefix es 'syn' and 'sym' highlights the meaning of togetherness of the specific things.
  • Here, the word 'synchronize' means to put together in terms of time and manner.
6 0
3 years ago
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