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3 years ago

10 points PLS HELP!!!!!!!!!!!!!!!!

Chemistry

2 answers:

lisabon 2012 [21]3 years ago

7 0

Answer:

b aluminum foil have a good day

CaHeK987 [17]3 years ago

5 0

Aluminum foil I think but if not goodluck :)

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To get more electric current , we have to connect them in ______ combination.

Sever21 [200]

Answer:

A third type of circuit involves the dual use of series and parallel connections in a circuit; such circuits are referred to as compound circuits or combination

Explanation:

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3 years ago

Chlorofluorocarbons (CFCs) are no longer used as refrigerants because they destroy the ozone layer. Trichlorofluoromethane (CCl₃

Daniel [21]

Answer:

The molar entropy of the evaporation of Trichlorofluoromethan is 83.516 J/molK.

Explanation:

Entropy :It is defined as amount of energy which is unable to do work or the measurement of randomness or disorderedness in a system.

$S=\frac{Q}{T(Kelvins)}$

Molar heat of molar vaporization of Trichlorofluoromethane = 24.8 kJ/mol

Temperature at which Trichlorofluoromethan boils , T= 296.95 K

The molar entropy of the evaporation of Trichlorofluoromethan :

$=\frac{24.8 kJ/mol}{296.95 K}=0.083516 kJ/mol K = 83.516 J/molK$

The molar entropy of the evaporation of Trichlorofluoromethan is 83.516 J/molK.

8 0

3 years ago

How acidic buffer resist change in pH on addition of acid and base.

andrew-mc [135]

Answer:

Buffers are solutions that resist changes in pH, upon addition of small amounts of acid or base. The can do this because they contain an acidic component, HA, to neutralize OH- ions, and a basic component, A-, to neutralize H+ ions. Since Ka is a constant, the [H+] will depend directly on the ratio of [HA]/[A-].

hope it's help

<h3>#carryONlearning </h3>

5 0

3 years ago

What is the mass of an object that has a density of 2.3 g/mL And a volume of 343ML

Bogdan [553]

Answer:

788.9g

Explanation:

density=m/v

2.3g/ml=m/343ml

=343×2.3

=788.9g

7 0

3 years ago

Which subatomic particle plays the greatest part in determining the properties of an element?

Stolb23 [73]

Electrons - they are the particles that determine the chemical properties of an element

3 0

3 years ago

Read 2 more answers

*10 points* PLS HELP!!!!!!!!!!!!!!!!

10 points PLS HELP!!!!!!!!!!!!!!!!