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mixas84 [53]
2 years ago
13

What is the difference between a scientist theory and a scientific law

Chemistry
1 answer:
Andru [333]2 years ago
3 0

Answer:

A scientific theory is a widely accepted belief on why something happens in the natural world while a scientific law is proven to a fact that shows what happens.

Explanation:

You might be interested in
If you evaporated 125 mL of a 3.5 M solution of iron(II) nitrite, how many moles of iron(II) nitrite would you recover?
Verizon [17]

Considering the definition of molarity, 0.4375 moles of iron(II) nitrite you would recover.

In order to find the moles of the solid that can be recovered from this solution, you need to use the definition of molarity.

<h3>Definition of molarity</h3>

Molar concentration or molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:

Molarity=\frac{number of moles}{volume}

Molarity is expressed in units \frac{moles}{liters}.

Moles of iron(II) nitrite

In this case, you evaporated 125 mL of a 3.5 M solution of iron(II) nitrite​. Then you know:

  • Molarity= 3.5 M
  • number of moles= ?
  • volume= 125 mL= 0.125 L (being 1000 mL= 1 L)

Replacing in the definition of molarity:

3.5 M=\frac{number of moles}{0.125 L}

Solving:

number of moles= 3.5 M× 0.125 L

<u><em>number of moles= 0.4375 moles</em></u>

Finally, 0.4375 moles of iron(II) nitrite you would recover.

Learn more about molarity:

brainly.com/question/9324116

brainly.com/question/10608366

brainly.com/question/7429224

3 0
2 years ago
Nearly ¾ of the world's surface is covered with water so most of the earth's living things live in the
KATRIN_1 [288]

Answer:

ocean

Explanation:

aavssdbvsvasgvesvdbvsvdbvv

7 0
3 years ago
Read 2 more answers
Which has more mass: a stick of 4 counting cubes or a pile of 4 counting cubes?
sattari [20]

i have thids quuuuesstttttttiopn

4 0
2 years ago
True or False the amount of heat transferred from an object only depends on the specific heat of the object
Naya [18.7K]

ANSWER

True

EXPLANATION

Heat energy is a type o energy transfer that is caused by a temperature difference, and it change the temperature of an object.

The formula for calculating heat energy is given below

\begin{gathered} \text{  q = mc}\Delta t \\ \text{ c = }\frac{q}{m\Delta t} \\  \end{gathered}

From the equation, heat transferred is directly proportional to the specific heat

Hence, the statement is true

7 0
11 months ago
What is the visual indicator that enough of a drying agent, such as anhydrous MgSO4 or CaCl2, has been added to properly dry an
Nina [5.8K]

Answer:

how can I solve this ?4Al+3O2 produce 2Al2O3 find a) oxygen atoms needed to react with 5.4 g of aluminium b) grams of oxygen needed to react with 0.6 mol of aluminium?

(A) n=m/M,

n(Al)=5.4/27=0.2 moles

n(O2)=n(Al)*3/4=0.2*3/4=0.15 moles

Number of oxygen atoms= n(O2)*Avogadro's number

=0.15*6.02*10^23=9.03*10^22 oxgyen atoms

(B)

n=m/M

n(Al)=0.6/27=0.02222 moles

n(O2)=n(Al)*3/4=0.016666 moles

m=n*M

m(O2)=0.0166666*32=0.53333 grams

4 0
2 years ago
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