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djverab [1.8K]
3 years ago
14

Match the humidities with their description.

Chemistry
1 answer:
Sloan [31]3 years ago
8 0
1. C
2. D
3. A
4. B

Hope this helped! Please brainliest!
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How do you tell if elements have similar chemical properties periodic table?
Oksi-84 [34.3K]
Whether or not they are within the same group (vertical columns) within the periodic table, determines similarity of chemical properties.
5 0
3 years ago
Calculate the mass of 140g of Cl2
spin [16.1K]

Answer:

6amu

Explanation:

mass=proton+neutron

mass of cl2=2(16+16)=64amu

8 0
3 years ago
The molar heat capacity of an unknown substance is 92.1 J/mol-K. If the unknown has a molar mass of 118 g/mol, what is the speci
dlinn [17]

Answer : The specific heat (J/g-K) of this substance is, 0.780 J/g.K

Explanation :

Molar heat capacity : It is defined as the amount of heat absorbed by one mole of a substance to raise its temperature by one degree Celsius.

1 mole of substance releases heat = 92.1 J/K

As we are given, molar mass of unknown substance is, 118 g/mol that means, the mass of 1 mole of substance is, 118 g.

As, 118 g of substance releases heat = 92.1 J/K

So, 1 g of substance releases heat = \frac{92.1}{118}=0.780J/g.K

Thus, the specific heat (J/g-K) of this substance is, 0.780 J/g.K

8 0
3 years ago
What is the change in temperature in a 128g sample of titanium if it absorbs 2808J of heat energy at a temperature of 2°C? The s
Katena32 [7]

Given:

128g sample of titanium

2808J of heat energy

specific heat of titanium is 0.523 J/ g °C.

Required:

Change in temperature

Solution:

This can be solved through the equation H = mCpT where H is the heat, m is the mass, Cp is the specific heat and T is the change in temperature.

Plugging in the values into the equation

H = mCpT

2808J = (128g) (0.523 J /g °C) T

T = 41.9 °C

3 0
3 years ago
Give an example of at least one element made up of molecules and one compound made up of molecules.
zavuch27 [327]
I think mercury for element and sodium hypochlorite
8 0
3 years ago
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