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borishaifa [10]
3 years ago
15

True or false?

Chemistry
2 answers:
antoniya [11.8K]3 years ago
7 0
1 False
2 True

Good luck!!
sertanlavr [38]3 years ago
5 0
The answers are :
1 - F
2- T
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What does the atmoic weight 1 in hydrogen tell scientists
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Explanation:

The atomic number is equal to the number of protons in an atom's nucleus. Hydrogen's atomic number is 1 because all hydrogen atoms contain exactly one proton.

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Sulfur and magnesium both have two valence electrons.<br> a. True<br> b. False
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It would be false sulfur has 6 
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What is the reaction that joins thousands of small, identical molecules to form one very long molecule?
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This is known as polymerisation 
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La masa molar para el siguiente compuesto: CuOH, si sus masas atómicas son Cu=64 g/mol; O=16 g/mo e H=1 g/mol
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Abraham Lincoln

.

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If a gas sample has a pressure of 30.7 kPa at 0.00*C, by how much does the temperature have to decrease to lower the pressure to
Scrat [10]

Answer:

                      252.68 K  or   -20.46 °C

Explanation:

                    According to Gay-Lussac's Law, "Pressure and Temperature at given volume are directly proportional to each other".

Mathematically,

                                              P₁ / T₁  =  P₂ / T₂   ---- (1)

Data Given:

                  P₁  =  30.7 kPa

                  T₁  =  0.00 °C  =  273.15 K

                  P₂  =  28.4 kPa

                  T₂  =  <u>???</u>

Solving equation for T₂,

                  T₂  =  P₂ T₁ / P₁

Putting values,

                  T₂  =  28.4 kPa × 273.15 K / 30.7 kPa

                  T₂  =  252.68 K  or   -20.46 °C

8 0
3 years ago
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