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3 years ago

How many french fries can I buy from a fast food restaurant without getting kicked out?

Chemistry

1 answer:

Zigmanuir [339]3 years ago

6 0

All of them would be right

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Lauren’s SUV was detected exceeding the posted speed limit of 60 kilometers per hour, how many kilometers per hour would she hav

-BARSIC- [3]

10 km/h

Because if you take 35 and multiply it by 2, and take 0.5 and multiply it by 2, you get 70 kilometers in 1 hour. Therefore, 70-60 is 10 km/h

5 0

3 years ago

In boyle's law, the initial volume of a gas is 120 ml at 256 kpa. what will be the volume if the pressure increases to 385 kpa?

Vinil7 [7]

<h3>Answer:</h3>

79.8 ml

<h3>Explanation:</h3>

Boyle's law describes the relationship between pressure and volume when the temperature is constant. For this question, I will be rounding to significant figures.

Boyle's Formula

When describing the relationship between pressure and volume, the formula $\displaystyle P_{1} V_{1}= P_{2} V_{2}$ . In this formula, $P_{1}V_{1}$ is the initial pressure and volume. On the other side, $P_{2} V_{2}$ is final pressure and volume. So, to find a missing variable you must plug in the values you are given.

Final Volume

Remember when solving this question to remain constant in your units. When we plug in the values we know we are given:

$256kPa*120mL=385kPa*V_{2} mL$

Now, we can multiply the left side

$30720kPa*mL=385kPa*V_{2} mL$

Finally, we can divide by 385 to isolate the final volume

$79.8mL=V_{2}$

This gives the final volume of 79.8mL.

7 0

2 years ago

Scientists inflate a weather balloon similar to the one pictured in Figure 14.13 on page 463 of your textbook. On earth, the bal

vova2212 [387]

The answer to this question is C

7 0

4 years ago

A student adds 10.00 mL of a 2.0 M nitric acid solution to a 100.00 mL volumetric flask. Next, 50.00 mL of a 0.00500 M solution

qwelly [4]

Answer:

0,20M of nitric acid

0,00250M of KSCN

Explanation:

For nitric acid, the dilution is from 10,00mL to 100,00mL. That is a 1/10 dilution. As the initial concentration of nitric acid is 2,0M, the new concentration is: <em>2,0M× (1/10) = </em><em>0,20M of nitric acid</em>

For KSCN the dilution is from 50,00mL to 100,00mL, that is a dilution 1/2. Thus, the new concentration of KSCN is:

<em>0,00500M × (1/2) = </em><em>0,00250M of KSCN</em>

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I hope it helps!

5 0

3 years ago

If a wave bounces off a surface at an angle this is an example of _______________.

kirill115 [55]

answer should be Reflection

6 0

3 years ago