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ANEK [815]
3 years ago
14

What is atomwhat is atom​

Chemistry
2 answers:
Anna11 [10]3 years ago
7 0
An atom is a chemical that you cannot see but helps you live and breathe
Elanso [62]3 years ago
6 0

Answer:

<em>An</em><em> </em><em>atom</em><em> </em><em>is</em><em> </em><em>a</em><em> </em><em>chemical </em><em>substance </em><em>which</em><em> </em><em>exist </em><em>freely </em><em>in</em><em> </em><em>natu</em><em>re</em><em> </em><em>without </em><em>any</em><em> </em><em>reaction </em><em>.</em>

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How many moles of calcium chloride are contained in a 333 gram sample?
Bogdan [553]

Answer & Explanation:

The molar mass of calcium chloride is 110.98 g/mol. We can use this information to solve this problem. We can set up our equation like this..

\frac{333 g(CaCl2)}{} *\frac{1mol(CaCl2)}{110.98g(CaCl2)}

Multiply straight across on the top and straight across on the bottom.

\frac{333}{110.98}

Now divide.

\frac{333}{110.98}=3.00

So, there are 3.00 moles of calcium chloride contained in a 33 gram sample which is answer choice D.

6 0
3 years ago
how many moles of iodine should be added to 750 grams of carbon tetrachloride to prepare a 0.24 m solution
aleksley [76]

Answer:

0.18 mol

Explanation:

Given data

  • Mass of carbon tetrachloride (solvent): 750 g
  • Molality of the solution: 0.24 m
  • Moles of iodine (solute): ?

Step 1: Convert the mass of the solvent to kilograms

We will use the relationship 1 kg = 1,000 g.

750g \times \frac{1kg}{1,000g} =0.750kg

Step 2: Calculate the moles of the solute

The molality is equal to the moles of solute divided by the kilograms of solvent. Then,

m = \frac{moles\ of\ solute }{kilograms\ of\ solvent} \\moles\ of\ solute = m \times kilograms\ of\ solvent = \frac{0.24mol}{kg}  \times 0.750kg = 0.18 mol

6 0
3 years ago
Read 2 more answers
Name of the unit and type of measurement indicated for 4.8 m
s2008m [1.1K]

<u>Answer:</u> The given quantity is a type of length and is measured i the units of meters.

<u>Explanation:</u>

For the given quantity which is 4.8 meters, the unit is meters ans it the unit used to measure the length of an object.

For example: The height of the building is 150 meters. This statement means that the length of the building from the ground is 150 and it is measured in the units of meters.

Hence, the given quantity is a type of length and is measured i the units of meters.

7 0
3 years ago
The common name for the compound ch3ch2ch2 och2ch3 is
Diano4ka-milaya [45]
Caesium sulfate (cesium sulfate) is the inorganic compound and salt with the formula Cs2SO4. It is a white water-soluble solid that is used to prepare dense aqueous solutions for use in isopycnic (or "density-gradient") centrifugation. It is isostructural with potassium salt.
4 0
3 years ago
How fast do p waves travel ?
Amanda [17]

Answer:

Between 1 and 14 km/sec

6 0
3 years ago
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