Someone, please help me, it's urgent. 1. When measuring chemicals, you use a balance that can read to the nearest 0.1 gram. A procedure says to measure a 5.0 gram increment of a salt. Which of the following could be the actual amount you weigh under the circumstances?

4.95 grams

5.15 grams

5.50 grams

3-beam balance

2. Would you say that salts cannot be measured to more than 2 digits after the decimal on even the most precise scales due to the size of salt crystals.

Yes

No

3. Weighing papers are used to measure chemical solids because most things don't stick to them, and they are lightweight and easy to handle. A deliquescent chemical is one that absorbs water and gets wet when exposed to the air. What effect might deliquescence have on weighing out chemicals on a weighing paper?

The amount weighed is heavy due to the addition of water from the air

The amount weighed is light due to the addition of water from the air

The weight doesn't change, but not all of it is pure chemical because now there's some water mixed in.

weighing papers

4. Which of the following is required when working with a hot crucible?

tough skin on your fingers

high tolerance for pain from burns

tongs for moving the crucible

5. Which of the following issues might be avoided by keeping the flame of the bunsen burner at a reasonable level?

burning the lab down

decomposing the chemical salt

evaporating the chemical salt

melting the porcelain crucible

heating crucible

6. Cooling down the crucible before weighing it is good lab procedure

True

False

7. When assembling your ring stand, which of the following is not a good idea?

Make sure the ring stand is secure and not loosely connected

Sit the bunsen burner directly under the center of the support ring.

Center the clay triangle in the ring stand.

Set the support ring below the top of the bunser burner height.