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taurus [48]
3 years ago
6

How does the weight of your skin compare to the weight of your brain

Chemistry
1 answer:
yuradex [85]3 years ago
7 0
"Skin weighs twice as much as the brain"

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a sample of hydrogen gas (h2) is mixed with water vapor (h2o (g)). the make sure has a total pressure of 811 torr, and the water
Alborosie

Answer:

n=0.430molH_2

Explanation:

Hello!

In this case, considering the partial Dalton's law of partial pressures, we can notice that the total pressure equals the pressure of steam and the pressure of hydrogen, which can be determined as shown below:

p_T=p_H+p_w\\\\p_H=811torr-12torr=799torr*\frac{1atm}{760torr}\\\\p_H=1.05atm

Thus, by using the ideal gas law, we can compute the moles of hydrogen as shown below:

PV=nRT\\\\n= \frac{PV}{RT}=\frac{1.05atm*10.0L}{0.082\frac{atm*L}{mol*K}*298K}\\\\n=0.430molH_2

Best regards!

6 0
3 years ago
A 13-gram rubber stopper is attached to a 0.93-meter
makkiz [27]
<h3>Answer:</h3>

The centripetal acceleration is 26.38 m/s²

<h3>Explanation:</h3>

We are given;

  • Mass of rubber stopper = 13 g
  • Length of the string(radius) = 0.93 m
  • Time for one revolution = 1.18 seconds

We are required to calculate the centripetal acceleration.

To get the centripetal acceleration is given by the formula;

Centripetal acc = V²/r

Where, V is the velocity and r is the radius.

Since time for 1 revolution is 1.18 seconds,

Then, V = 2πr/t, taking π to be 3.142 ( 1 revolution = 2πr)

Therefore;

Velocity = (2 × 3.142 × 0.93 m) ÷ 1.18 sec

             = 4.953 m/s

Thus;

Centripetal acceleration = (4.953 m/s)² ÷ 0.93 m

                                        = 26.38 m/s²

Hence, the centripetal acceleration is 26.38 m/s²

6 0
3 years ago
How many moles of Na2SO4, are produced from 7.00 moles of (NH4)2SO4?
Harlamova29_29 [7]

Answer:

dumb stupid restarted illiterate STUPID students ARE JUST GOING TO DIE

8 0
3 years ago
Two brothers are skateboarding down a hill. Boy 1 has a mass of 100 kg and is moving 10 meters per second. Boy 2 has a mass of 2
sukhopar [10]
The second brother Brother because he is much heavier and therefore has more energy to be released hope this helps
6 0
3 years ago
Read 2 more answers
Humans have the ability to change the characteristics, or traits, of organisms over time. What is this process called?
VMariaS [17]

Answer:

gene therapy.

4 0
3 years ago
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