2 years ago

Can somebody please help me with this & also give an explanation!! Will appreciate it

Chemistry

1 answer:

o-na [289]2 years ago

7 0

Answer:

the density of the cube is 304 g/ cm^3

Explanation:

Because 1520 ÷ 5 = 304 or 304 × 5 =1520

You might be interested in

Your teacher created a 2 g/L salt-water solution (solution A) and a 2.5 g/L salt-water solution (solution B), both in 500 mL of

Genrish500 [490]

solution B is concentrated

Explanation:

3 0

2 years ago

Why are the alkali metals and the halogens among the most reactive elements on the periodic table

tensa zangetsu [6.8K]

Because the alkali metals are the group 1 metals, they have only 1 valence electron that they want to lose, and the halogens are the group 17 nonmetals, they want to gain 1 valence electron to become stable.

7 0

3 years ago

Read 2 more answers

1. A gas has a volume of 45 L at a pressure of 140 kPa. What is the volume when

pishuonlain [190]

Answer:

The new volume of the gas is 21 L.

Explanation:

Volume of a gas is inversely proportional to its pressure at constant temperature such that,

$V\propto \dfrac{1}{P}$

$P_1V_1=P_2V_2$

We have,

$V_1=45\ L\\\\P_1=140\ kPa \\\\P_2=300\ kPa$

It is required to find V₂. Using above law or Boyle's law such that :

$V_2=\dfrac{P_1V_1}{P_2}\\\\V_2=\dfrac{140\times 45}{300}\\\\V_2=21\ L$

So, the new volume of the gas is 21 L.

7 0

3 years ago

What could J. J. Thomson conclude from his experiments? Atoms are mostly empty space. Most of the mass of the atom is concentrat

Oduvanchick [21]

Answer:

atoms must balance positive and negative particles

Explanation:

3 0

2 years ago

Read 2 more answers

1. Calcium chloride is a salt that is added to roads and sidewalks

Sholpan [36]

Answer:

(d) In the presence of sulfuric acid, calcium chloride reacts to form hydrogen chloride.

Explanation:

It's because it lowers the melting point of the ice / etc so I think it is, but check it yourself too!

8 0

2 years ago