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pickupchik [31]
3 years ago
12

Generally, systems move spontaneously in the direction of increasing entropy. TRUE FALSE

Chemistry
1 answer:
allochka39001 [22]3 years ago
5 0

Answer:

true

Explanation:

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Phoenix [80]

Answer:

i have taken environmental science so i can help

4 0
3 years ago
Which element has a smaller atomic radius?<br> tungsten (74) or oxygen (8)
Rufina [12.5K]

Answer:

Oxygen

Explanation:

Atomic radius trend

-decreases from left to right

-increases from top to bottom

Tungsten is in period 7, which has a larger atomic radius

Oxygen is in period 2, which is in a lower energy level and is on the right side. Therefore, has a smaller atomic radius.

3 0
3 years ago
Which is more concentrated, a solution containing 10g of NaCl in 100 g
Pavel [41]

Answer:

The answer is the solution containing the 90g of water.

Explanation:

Because both solutions have the same amount of the sodium chloride, the concentration would be the same if they both had the same amount of water.

Because the second solution has less water, there is more of the sodium chloride per each drop of water.

I hope this helps :)

4 0
3 years ago
How many molecules are in 30 liters of methane (CH4) at STP?
mylen [45]

Hello!

How many molecules are in 30 liters of methane (CH4) at STP ?

We have the following information:

Knowing that by Avogadro's Law for each mole of substance we have 6.02 * 10²³ molecules, it is known that in STP (Standard Temperature and Pressure) one mole of any gas equals 22.4 L, then:

22.4 L ----------------- 6.02*10²³ molecules

30 L -------------------- y molecules

\dfrac{22.4}{30} = \dfrac{6.02*10^{23}}{y}

multiply the means by the extremes

22.4*y = 30*6.02*10^{23}

22.4*y = 1.806*10^{25}

y = \dfrac{1.806*10^{25}}{22.4}

\boxed{\boxed{y = 8.0625*10^{23}\:molecules}}\:\:\:\:\:\:\bf\green{\checkmark}

Answer:

8.0625*10²³ molecules of methane

________________________  

\bf\green{I\:Hope\:this\:helps,\:greetings ...\:Dexteright02!}\:\:\ddot{\smile}

4 0
3 years ago
During a scientific investigation, which step will a scientist perform first?
svlad2 [7]

Answer:

you need to have a question or a problem first

7 0
3 years ago
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