Moles of glucose = Molarity x volume solution
= 4.5 x 1.5
= 6.75 moles.
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Answer:
The answer is A
Explanation:
Because the x would be smalle than |-40|
Answer:
element
Explanation:
elements consist of pure substances
Conservation of mass can be checked in an experiment . There are three steps to do it in a best way:
1. Weigh all the equipment and materials required in the experiment before the experiment.
2. Avoid spillage and evaporation during the experiment.
3. Weigh all the equipment and materials after the experiment.
If the mass is conserved then weight from step 1 is equal to weight from step 3.
<span>The first method to determine the chemical composition of a substance in space was using light. By determining red shift in the observed spectrum of light they could determine the elements they were observing. Different elements change the way light behaves and from this scientists can determine the makeup of things such as stars and nebulas.</span>
