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Zinaida [17]
3 years ago
14

Help plz, thx

Chemistry
2 answers:
Yakvenalex [24]3 years ago
7 0
Fresh water bc it has to be a certain temperature to melt
horrorfan [7]3 years ago
6 0

Answer: fresh water

Explanation: its not cold enough for salt water to melt

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Why does sugar dissolve faster than salt
Usimov [2.4K]

☁️ Answer ☁️

Option 1: When dissolved, sugar molecules have more opportunities to bond with positive-negative water molecules. Therefore, sugar dissolves faster than salt, because its component molecules are more soluble in water.

❤️

Option 2: Sugar can dissolve easier than salt because when you add 8 spoons of salt into water the salt already starts to stay in the bottom of the cup. And, when you add 30 spoons into water the sugar just starts to stay in the bottom of the cup. It’s almost the same.

Hope it helps.

Have a nice day!~  ̄▽ ̄❤️

4 0
3 years ago
Lewis atomic model proposed that electrons were arranged around the nucleus in what
k0ka [10]
Lewis had proposed that the valence electrons of any substance were arranged around its atoms in a cubic configuration. Later on, this was modified when it was learned that the electrons actually orbit the nucleus, similar to the planets orbiting the sun. Moreover, it is now deduced that the electrons are found in regions, known as electron clouds, and their specific, discrete location at a given point in time can not be determined.
7 0
3 years ago
How many moles of H2 are in a flask with a volume of 2500 mL at a pressure of 30.0 kPa and a temperature of 27oC?
quester [9]

Answer:

0.0300 moles of H₂

Explanation:

The original equation is PV = nRT. We need to change this to show moles (n).

n = \frac{PV}{RT}

It's important to convert your values to match the constant (r) in terms of units.

30.0 kPa = 0.296 atm

2500 mL = 2.50 L

27 °C = 300 K

Now, plug those values in to solve:

n = \frac{(0.296)(2.50)}{(0.0821)(300)}    -  for the sake of keeping the problem clean, I didn't include the units but you should just to make sure everything cancels out :)

Finally, you are left with n = 0.0300 moles of H₂

4 0
3 years ago
What did J.J. Thomson discover about electrons?
iris [78.8K]

The answer is D

Brainliest?

5 0
3 years ago
Read 2 more answers
Need help fast plzzz!!! Please help.
IRINA_888 [86]

Answer:

1. 0.5333333m (Calculator Soup Work Calculator)

2.

9. 29.1666666667% efficient

10. 44.5% efficient

Explanation:

will do other answers later

5 0
3 years ago
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