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vesna_86 [32]
2 years ago
13

How do particles differ after a physical change?

Chemistry
1 answer:
KonstantinChe [14]2 years ago
3 0

Answer:

They are still the same particals just. packed together diffrently depending on what stae of matter it's in.

Explanation:

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What would happen if uranium-241 lost 2 protons and 2 neutrons?
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If uranium-241 lost 2 protons and 2 neutrons, then  thorium-237 would be produced. The number beside the element is the mass number which is the sum of protons and neutrons.  If uranium would lose 2 protons and 2 neutrons, then the mass number would decrease by 4 making it 237. Looking in a periodic table, thorium is the element which has a mass number of 237.
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3 years ago
A desert would have what type of climate?
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A syringe contains 0.65 moles of he gas that occupy 900.0 ml. what volume (in l) of gas will the syringe hold if 0.35 moles of n
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3 years ago
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Question 15 How many grams of NaCl are required to make 500.0 mL of a 1.500 M solution? 58.40 g 175.3 g 14.60 g 43.83 g
ExtremeBDS [4]
Hi!

To make 500 mL of a 1,500 M solution of NaCl you'll require 43,83 g

To calculate that, you will need to use a conversion factor to go from the volume of the 1,500 M solution to the required grams. For this conversion factor, you'll use the definition for Molar concentration (M=mol/L) and the molar mass of NaCl. The conversion factor is shown below:

gNaCl=500mLsol* \frac{1L}{1000 mL}* \frac{1,500 mol NaCl}{1Lsol}* \frac{58,4428 g NaCl}{1 mol NaCl} \\ =43,83gNaCl

Have a nice day!
4 0
3 years ago
PLEASE ANSWER FAST!
Paraphin [41]

Answer:

0.36 g/cm3 I hope this helps

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3 years ago
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