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avanturin [10]
3 years ago
6

Please helpPlease help

Chemistry
1 answer:
deff fn [24]3 years ago
3 0
A)3 bcuz paper filters are used to separate solids from liquids

b) 2 bcuz it is a process of separating a pure liquid from a mixture of other liquids.And it works when it has different boiling point
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Calculate the molecular mass of Co(NO3)2<br>with steps please
Nana76 [90]

Answer:

182.933~ \text{g mol}^{-1}

Explanation:

\text{Atomic mass of cobalt(Co)} = 58.933~u\\\\\text{Atomic mass of nitrogen(N)}= 14~u\\\\\text{Atomic mass of oxygen(O)}=16~u\\\\\text{Molar mass of}~ \text{Co}\left(\text{NO}_3} \right)_2 = 58.933 + 2(14 +16 \times 3)~ \text{g mol}^{-1}\\\\~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~=(58.933 + 124)~ \text{g mol}^{-1}\\\\~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~=182.94~ \text{g mol}^{-1}

4 0
2 years ago
Beetween which two points does the object
Andrew [12]
B D and E. C isn't the answer because it is stopped.
3 0
3 years ago
How many grams of calcium carbonate were used if you drew the periodic table on the sidewalk using
german

Based on the data provided, there are 25 g of calcium carbonate in 1.505 × 10^23 atoms.

<h3>What is the moles of calcium carbonate in 1.505 × 10^23 atoms of calcium carbonate?</h3>

The mole of a substance can be calculated as follows:

  • Moles of substance = number of particles/6.02 × 10^23

Moles of calcium carbonate = 1.505 × 10^23/6.02 × 10^23

Moles of calcium carbonate = 0.25 moles

The mass of calcium carbonate in 0.25 moles is calculated as follows:

  • mass = moles × molar mass

molar mass of a calcium carbonate = 100 g/mol

mass of calcium carbonate = 0.25 × 100 = 25 g.

Therefore, there are 25 g of calcium carbonate in 1.505 × 10^23 atoms.

Learn more about molar mass and mass at: brainly.com/question/15476873

8 0
2 years ago
20 points hurry
goldfiish [28.3K]

Answer:

Blue Jay is the correct answer.

Explanation:

5 0
3 years ago
Read 2 more answers
Find the density of an empty tissue box with a mass of 345 grams and a volume of 1125 cm3.
trasher [3.6K]

Answer:

The answer is

<h2>0.307 g/cm³</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}

From the question

mass of box is 345 g

volume = 1125 cm³

The density of the object is

density =  \frac{345}{1125}  \\  = 0.3066666...

We have the final answer as

<h3>0.307 g/cm³</h3>

Hope this helps you

4 0
3 years ago
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