Explanation:
density can be calculated using the following rule: density=mass/volume
therefore,
mass = density x volume
we have density 8.9gm/cm³ and volume=3cm³ substituting in the above equation, we can calculate the mass as follows:
mass = 8.9 x 3 = 26.7 grams,
Approx 27 grams
Answer:
The solubility of the salt is
46.75g salt/100g of H2O
Explanation:
If 7.70g of water can dissolve 3.60g at 21°C
That is 1.0g of water can dissolve (3.6÷7.7) grams of salt, that is 0.4675_g of salt at 21°C or 100 grams of water can dissolve 100×0.4675 = 46.75g
The solubility of the salt is
46.75g salt/100g of H2O
Answer:
0.034 M
Explanation:
1/[A] = kt + 1/[A]o
[A] = ?
k= 0.04556
t= 10.0 minutes or 600 seconds
[A]o = 0.50 M
1/[A] = (0.04556 × 600) + 1/0.50
[A] = 0.034 M
Answer: Gravity.
Explanation:
Newton realized that the reason the planets orbit the Sun is related to why objects fall to Earth when we drop them. The Sun's gravity pulls on the planets, just as Earth's gravity pulls down anything that is not held up by some other force and keeps you and me on the ground.
Hi, I noticed no ones helped you yet so I'll try to. We can remove the third option because if the water evaporates then there will be no mass (Obviously.) It becomes a gas and I don't think gas has a great mass. (It rhymes too.) The last option seems logically correct for me. If you freeze water, it will continue to weigh the same. Same with boiling water; the mass stays the same. I would go with "Adding more water will increase the mass". Hope I helped you! Good Luck!