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3 years ago

9.56 x 10^5 cg is how many grams?

Chemistry

1 answer:

Liula [17]3 years ago

4 0

Answer:

9.56×10¯⁷ g.

Explanation:

Mass in cg = 9.56×10¯⁵ cg

Mass in g =.?

Thus, we can convert 9.56×10¯⁵ cg to grams (g) as illustrated below:

Recall:

1 cg = 0.01 g

Therefore,

9.56×10¯⁵ cg = 9.56×10¯⁵ cg × 0.01 g / 1 cg

9.56×10¯⁵ cg = 9.56×10¯⁷ g

Therefore, 9.56×10¯⁵ cg is equivalent to 9.56×10¯⁷ g.

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What is the molarity of a solution made by adding :1.565 moles of PbN03 to 500 mL

jeyben [28]

Answer:

This question is a bit vague. We're not told if 500ml is the volume of the solution and additional info is not given to calculate the volume of pbNo3 being added.

If you solve with 500ml as the volume of solution ... You'll have the answer below.

Molarity=moles of solutes/Volume of solvent(in litres)

moles of solute given=1.565moles

Volume = 500ml. There's 1000ml to a litre. Dividing by 1000ml to convert to Litres... You have 0.5L

Molarity = 1.565/0.5

=3.13M

6 0

3 years ago

What are the masses of the four different brcl molecules?

tatyana61 [14]

Through mass spectrometry, we can define 4 different isotopes of the BrCl molecule:

⁸¹Br³⁷Cl, ⁸¹Br³⁵Cl, ⁷⁹Br³⁷Cl, ⁷⁹Br³⁵Cl

Masses of the different individual isotopes:

³⁷Cl=36.966

³⁵Cl=34.968

⁸¹Br=80.916

⁷⁹Br=78.918

Masses of 4 different isotopes of the BrCl molecule:

⁸¹Br³⁷Cl=80.916+36.966=117.882

⁸¹Br³⁵Cl=80.916+34.968=115.884

⁷⁹Br³⁷Cl=78.918+36.966=115.884

⁷⁹Br³⁵Cl=78.918+34.968=113.886

7 0

3 years ago

Calcium oxide (CaO), an important ingredient in cement, is produced by decomposing calcium carbonate (CaCO3) at high temperature

alisha [4.7K]

Answer:

0.0018 mol/min is the average rate of carbon dioxide gas production in moles per minute during the 10 minutes.

Explanation:

Pressure of carbon dioxide gas = P = 0.25 atm

Volume of carbon dioxide gas = V = 5.0 L

Moles of carbon dioxide gas = n

Temperature of the carbon dioxide gas,T = 550°C = 550+273 K = 823 K

Using an ideal gas equation :

$PV=nRT$

$n=\frac{PV}{RT}=\frac{0.25 atm\times 5.0 L}{0.0821 atm L/mol K\times 823 K}$

n = 0.018 mol

In 10 minutes pressure of carbon dioxide gas reached to 0.25 atm

Average rate of production of moles of carbon dioxide gas per minute in duration of 10 minutes:

$=\frac{0.018 mol}{10 min}=0.0018 mol/min$

0.0018 mol/min is the average rate of carbon dioxide gas production in moles per minute during the 10 minutes.

8 0

4 years ago

Iodine is blue-black, crystalline, and solid. It sublimes to a violet-colored gas and reacts with aluminum and many other metals

Pepsi [2]

Answer:

blue-black PHYSICAL PROPERTY
crystalline PHYSICAL PROPERTY
solid PHYSICAL PROPERTY
sublimes to a violet-colored gas PHYSICAL PROPERTY
reacts with aluminum and many other metals CHEMICAL PROPERTY

Explanation:

Chemical properties are visible through chemical reactions, in which the chemical identity changes to form new substances. On the other hand, physical properties are evident without a change in the identity of a substance.

<em />

<em>Which of these five properties are physical and which are chemical?</em>

blue-black PHYSICAL PROPERTY
crystalline PHYSICAL PROPERTY
solid PHYSICAL PROPERTY
sublimes to a violet-colored gas PHYSICAL PROPERTY
reacts with aluminum and many other metals CHEMICAL PROPERTY

4 0

3 years ago

If the sea floor is spreading,why is the Earth not getting bigger?

TEA [102]

Because the the sand on the sea for is very compact and the water salt and chemicals make it compact making it stick together and fill up holes or cracks before going anyhere

4 0

4 years ago

Read 2 more answers