Answer:
wear safety goggles to protect your eyes
Gloves to protect your hands
Stand a distance away from it to make sure you dont get burnt by the fire
etc
Explanation:
Answer: 4.14g of Na2CO3 would be needed
Explanation:Please see attachment for explanation
Steroids are lipids because they are hydrophobic and insoluble in water
Answer:
The answer to your question is below
Explanation:
An endothermic reaction absorbs heat to proceed.
An exothermic reaction releases heat to proceed.
A. When a certain amount of potassium nitrate is dissolved in water, the water temperature drops from 23°C to 18°C. This is an example of an endothermic reaction because of the temperature diminishes.
B. Jack cooks himself a steak. This is an endothermic reaction because the steak does not cook itself it needs heat to be cooked.
C. When cold water is mixed with sulphuric acid, the mixture can rapidly reach the boiling point of water. This is an exothermic reaction because the temperature of water increases, which means that energy is been released.
D. A flare burns up slowly. I think it is an endothermic reaction because it was supply energy to proceed.