Answer:
liquid bolling
Explanation:
because it just using heat.
Answer:
True
Explanation:
Dispensing chemical from large stock bottles into smaller container makes sure that students only takes the quantity they need which reduces wastage. Also in situation where the students did not finish the reagent or chemical it is easier for student to pour back into smaller bottle than the entire reagent bottle which can contaminate the whole solution. Small bottles prevent or reduces the risk of spillage because it is easier to handle and pour.
Answer:
They break down the plants and animals they eat.
Explanation:
Consumers are the organisms which feed on plants and animals for obtaining energy. The carbon which is present in plant body in the form of glucose which is made in the process of photosynthesis. When these plants are eaten by consumers, the carbon which present in plants are transferred into the animal's body. This carbon is removed from the body of consumer in the process of cellular respiration and again goes to the atmosphere.
Answer:
C4H8
Explanation:
M(CF2) = M(C) + 2M(F) = 12.0 + 2*19.0 = 50.0 g/mol
M(unknown)/M(CF2) = 200.4 g/mol /50.0 g/mol = 4
So we need to take CF2 4 times.
C4H8
Answer:
The solution can be prepared by adding 150.0 mL of isopropyl alcohol to 350.0 mL of water to make 30.0% isopropyl alcohol aqueous solution.
Explanation:
∵ The volume% of a solution = [(volume of the solute(isopropy)/(volume of the solution)] x 100.
The volume % = 30.0%, volume of the solution = 500.0 mL.
∴ Volume of the solute = (the volume% of a solution)(volume of the solution)/100 = (30.0%)(500.0 mL)/100 = 150.0 mL.
∵ The volume of solution = volume of the solute + volume of water
∴ Volume of water = volume of the solution - volume of the solute = (500.0 mL) - (350.0 mL) = 150.0 mL.
- <em>So, the solution can be prepared by adding 150.0 mL of isopropyl alcohol to 350.0 mL of water to make 30.0% isopropyl alcohol aqueous solution.</em>
