Answer:
Caffeine
Explanation:
Caffeine is the world's most widely consumed additive chemical substance. But unlike other substances it is legal and not regulated under any jurisdiction
Its use has been almost doubled since 1980s. After Caffeine comes the rank of NCT a highly substance found in tobacco substances.
Answer:
B. Hypothesis
Explanation: A hypothesis is a guess of what will or might happen before an experiment.
<span>When a chemical reaction occurs and the thermometer in the container records a drop in temperature t</span>he reaction is exothermic because heat was released by the reaction.
<span>B. The reaction is exothermic because heat was released by the reaction. is your answer.
Hoped I helped!</span>
Inertia. The first law of motion is often called the law of inertia. ... Inertia causes a moving object to stay in motion at the same velocity (speed and direction) unless a force acts on it to change its speed or direction. It also causes an object at rest to stay at rest.
328 % means 0.328 g of KCN in 100 g of solution
0.328 g of KCN ---------> 100 g of solution
1120 * 10^-3 g of KCN ------> (100 / 0.328) * 1120 * 10^-3
= 341 g of solution