3 years ago

Help!! How do I do this question

Chemistry

1 answer:

swat323 years ago

5 0

The answer is D. Okay l hope this helps

You might be interested in

The town of Eatonville has decided to replace all of the incandescent light bulbs in their public buildings with more energy-eff

astraxan [27]

Answer:A

Explanation:becuse they waste less heat energy

6 0

2 years ago

Determine the mass in grams of 4.69 x 1021 atoms of barium. (The

Virty [35]

Answer:

1.07 g Ba

Explanation:

Hello there!

In this case, according to the definition of the Avogadro's number and the molar mass, it is possible to say that 6.022x10^{23} atoms of barium equal one mole, and at the same time, 1 mole equals 137.327 grams of this element; thus, it is possible to say that 6.022x10^{23} atoms of barium have a mass of 137.327 grams; therefore, it i possible for us to calculate the required mass in grams as shown below:

$4.69x10^{21}atoms*\frac{137.327gBa}{6.022x10^{23} atoms} \\\\=1.07gBa$

Best regards!

5 0

2 years ago

Is pcl3 covalent or ionic

WITCHER [35]

Covalent Bond.

To be specific, it is polar covalent bond. :)

5 0

2 years ago

How many grams of calcium chloride are dissolved in 5.65 liters of a 0.11 m solution of calcium choride?

Julli [10]

C = 0.11 mol
V = 5.65 L
n = ???

n = C*V
n = 0.11 * 5.65
n = 0.622 mols

1 mol of CaCl2 = 40 + 2*35.5 = 111 grams
0.622 mol = x

x = 111 * 0.622
x = 69.0 grams CaCl2

4 0

2 years ago

Give two examples of diffusion process in plants and animals.

lisabon 2012 [21]

answer:

in plants

Transport manufactured food from the leaves to others parts of the plant

Facilitates gaseous exchange through the stomata in the leaves to other parts of the plant

in animal

Exchange of respiratory gases across respiratory services

Excretion of nitrogenous waste in some unicellular organisms

Explanation:

Hope it benefit

3 0

2 years ago

**Help!! ** How do I do this question

Help!! How do I do this question