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fgiga [73]
3 years ago
6

Ashley determines the density, mass, and volume of a sample of liquid water. She removes part of the sample and repeats her meas

urements with the remaining water. Which of the following properties should have the same value for both of her measurements?
○All of the above
○Density
○Mass
○Volume​
Chemistry
1 answer:
Paul [167]3 years ago
3 0

Answer:

Only thing that should hold constant is the Density of the water

Explanation:

Since you are removing some of the water, the Mass and Volume will decrease.

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My barometer is reading 1253 torr. What is the pressure in mmHg?
kobusy [5.1K]

Answer:

The pressure in mmHg is 1253 (option C)

Explanation:

Two quantities are directly proportional if when multiplying or dividing one of them by a number, the other is multiplied or divided by that number. In other words, the magnitudes are directly proportional when one magnitude increases and so does the other in the same proportion; or when one magnitude decreases and so does the other in the same proportion.

The rule of three or is a way of solving proportionality problems between three known values ​​and an unknown value, which can be applied to directly proportional quantities as follows:

a ⇒ b

c ⇒ x

So x=\frac{c*b}{a}

where a, b and c are data and x is the unknown value to be calculated.

In this case, knowing that 1 Torr = 1 mmHg, the rule of three can be applied as follows: if 1 torr is equal to 1 mmHg, 1253 torr is equal to how many mmHg?

pressure=\frac{1253 torr*1 mmHg}{1 torr}

pressure= 1253 mmHg

<u><em>The pressure in mmHg is 1253 (option C)</em></u>

6 0
3 years ago
Systems in nature tend to undergo changes towards?
kupik [55]
Lower energy and more disorder
8 0
3 years ago
Suppose you put 50 ml of water in the can instead of 100 ml and heated it to 40 degrees instead of 20 degrees. in what ways if a
Alex
<span>Answer: Once these values are put into the equation delta Q=mc delta T it will give you the same value for Q (change in energy) if the same fuel is used 50mL will mean it gets heated quicker making the experiment quicker 200mL would take longer to heat for the same change in temperature causing a longer experiment.</span>
8 0
3 years ago
ANSWER<br> d is the corresect answer
loris [4]

Answer:

d is the correct answer

Explanation:

7 0
3 years ago
A particular form of electromagnetic radiation has a frequency of 8.11 x 10^14 hz. What is the energy in joules of one quantum o
quester [9]
<span>E = hxf, où h = constante de Planck = 6,626 x 10 ^ -34Js 

E = 6,626 x 10 ^ -34 x 8.11 x 10 ^ 14 = 5.373 10^ -19 J </span><span> 

Hope this answers your question, Kimmyers14!</span>
5 0
3 years ago
Read 2 more answers
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