Answer:
Explanation:
Step 1: Obtain the mass of each element present in grams. Element % = mass in g = m.
Step 2: Determine the number of moles of each type of atom present. ...
Step 3: Divide the number of moles of each element by the smallest number of moles. ...
Step 4: Convert numbers to whole numbers.
Heat energy can be calculated by using the specific heat of a substance multiplying it to the mass of the sample and the change in temperature. It is expressed as:
<span>
Energy = mCΔT
</span><span>Energy = 132 (0.385) (45 - 32.2)
</span><span>Energy = 650.50 J</span>
I'd guess A or D, but my gut says A
The two reasons why the UK government is
encouraging citizens to recycle iron and steel is:
<span><span>
1. </span>The environment. Every machinery and device the industries makes
which includes, infrastructures, mega structures to micro devices. Iron and
steel is used. Reducing the extraction of ore and creating steel saves the
environment, reduces mining.</span>
<span><span>
2. </span>Economic reasons. When the ore mining and steel making is reduced
in activity, the government won’t just be able to save the environment but it
also save funds for other purposes.</span>
Answer:
<em><u>= 0.1 M </u></em>
Explanation:
450mL = 0.45L
If 24g of a solute are weighed by 1 mole of solute
1.2g of a solute will be weighed by ( 1.2 ÷ 24 )
=<u> 0.05 moles of a solute.</u>
0.45L of a solution are occupied by 0.05 moles
1L will be occupied by ( 1÷0.45 ) × 0.05
= 0.1 M