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Elodia [21]
3 years ago
12

Please help! Look at the picture for the question

Chemistry
1 answer:
suter [353]3 years ago
6 0
Hydrogen atom
Oxygen atom
Water molecule
Ice cube

An atom is smaller than a molecule. And a physical representation is the biggest of all four bc it has all of those components and more.
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You have 1.2 L of air in a balloon 175 K. what is the new volume of the balloon when it is heated to 245 K
Marina86 [1]

Answer:

A) 1.68 L

Explanation:

  • Charles’ Law states that: at constant pressure, the volume is directly proportional to the temperature of the gas.
  • It can be expressed as: V₁T₂ = V₂T₁,

V₁ = 1.2 L, T₁ = 175.0 K, V₂ = ??? L, T₂ = 245.0 K.

∴ V₂ = V₁T₂/T₁ = (1.2 L)(245.0 K)/(175.0 K) = 1.68 L.

8 0
3 years ago
Please answer this question for meeeeeeeeeee pleeeeeeeeeease!
Anettt [7]

Answer:battery in a flashlight so A

Explanation:

6 0
3 years ago
Problem page a virus has a mass of ×9.010−12mg and an oil tanker has a mass of ×3.0107kg . use this information to answer the qu
faltersainse [42]
A. The mass of one mole of the virus is calculated by multiplying the mass of a single virus by the Avogadro's number which is equal to 6.022 x 10^23. Performing this operation,

   mass = (9.0 x 10^-12 mg)(6.022 x 10^23) = 5.42 x 10^12 mg

In correct number of significant figures, the answer would only have to be 5.4 x 10^12 mg. 

b. The number of moles of the virus that will have the same mass as the oil tanker is calculated by dividing the mass of the oil tanker by the mass of one mole of the virus. Note that doing division, both would have to have the same units. 

       n = (3.0 x 10^7 kg) / (5.4 x 10^12 mg)(1 g/1000 mg)(1 kg/1000 g)

Simplifying,
               n = 6

In correct number of significant figures, the answer is 6.0. 
4 0
3 years ago
Read 2 more answers
Compared with cooler stars, the hottest stars have absorption lines that are
lukranit [14]
The answer should be "broad and fuzzy"
8 0
3 years ago
Calculate the concentration of a solution that has 6.7 moles in a volume of 0.6 liters.
Yuri [45]

Answer:

11.2 M

Explanation:

Given data:

Number of moles = 6.7 mol

Volume of solution = 0.6 L

Concentration /Molarity = ?

Solution:

Molarity:

It is number of moles of solute in to per kg or litters of solution. It can be calculated by the following formula.

Molarity = number of moles / Volume in L

Now we will put the values in formula.

Molarity = 6.7 mol / 0.6 L

Molarity = 11.2 mol/L

Molarity = 11.2 M

6 0
3 years ago
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