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In-s [12.5K]
3 years ago
11

Which planet has a shorter year than Earth's year?

Chemistry
1 answer:
ivanzaharov [21]3 years ago
7 0
The correct answer should be A. Venus.
I hope this helps, pls mark me the brainliest
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How many moles are in 8.25×10²⁵ molecules of water(H20)?​
enyata [817]

Answer:

82500000000000000000000000

Explanation:

This is the only answer I can come up with.

6 0
3 years ago
A child is swinging back and forth on a swing. Changes in her kinetic and potential energy are happening each moment. At which p
dedylja [7]

Answer:

The maximum potential energy of the child will be maximum at the two end points.  

The maximum kinetic energy of the <em>child </em>occurs at the lowest point of the swing.  

The potential energy of the child depends on the displacement of the child.  

P.E = mgh  

The maximum height attained occurs at the two end points of her swing motion.  

Thus, the maximum potential energy of the child will be maximum at the two end points.

The kinetic energy of the child depends on the velocity of the child  

K.E = ¹/₂mv²  

The maximum velocity of the swing occurs at the lowest point of the swing.  

Thus, the maximum kinetic energy of the child occurs at the lowest point of the swing.

Hope this helps!

5 0
3 years ago
Read 2 more answers
A 0.211 g sample of carbon dioxide, CO2, has a volume of 560 mL and a pressure of 429 mmHg whats the temperature of the gas in K
SCORPION-xisa [38]

The temperature of the gas sample is 813 K.

<u>Explanation:</u>

We have to use the ideal gas equation to find the temperature of the gas sample.

The ideal gas equation is PV = nRT

Pressure, P = 429 mm Hg = 0.56 atm

Volume, V = 560 mL = 0.56 L

R = gas constant = 0.08205 L atm mol⁻¹K⁻¹

Mass = 0.211 g

Molar mass of carbon di oxide = 44.01 g / mol

Moles, n = $\frac{given mass}{molar mass} = \frac{0.211 g}{44.01 g/mol}

              = 0.0047 mol

Now, we have to plugin the above values in the above equation, we will get the temperature as,

$T= \frac{PV}{nR}

T = $\frac{0.56  \times 0.56}{0.08205 \times 0.0047}

 = 813 K

So the temperature of the gas sample is 813 K.

5 0
4 years ago
Which of the following is used for chemical symbols today
kap26 [50]

Answer/Explanation:

letters are used as a sign of chemical symbols in today's time

4 0
3 years ago
If I mixed milk and vinegar together would it be a chemical or physical change?
IrinaVladis [17]

Answer:

A chemical change

Explanation:

3 0
3 years ago
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