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Feliz [49]
3 years ago
15

What is the volume, in cubic meters, of an object that is 0.21 m long, 4.7 m wide, and 5.3 m high?

Chemistry
1 answer:
oee [108]3 years ago
5 0

Answer:

The formula for volume of a rectangle is length multiply by width multiply thus, 0.25 m multiply 6.1 m multiply by 4.9 m = 7.5m^3.

Explanation:

the least number of significant figures is 2 thus the final answer will have the same number of significant figures. 7.5m^3

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Dichlorine monoxide, Cl2O is sometimes used as a powerful chlorinating agent in research. It can be produced by passing chlorine
Amiraneli [1.4K]

Answer:

% yield =  82.5%

Explanation:

HgO + 2Cl₂ →  HgCl₂ +  Cl₂O

Our reactants are:

  • HgO and Cl₂

Our products are:

  • HgCl₂ +  Cl₂O

We do not have information about moles of reactants, but we do know the theoretical yield and the grams of product, in this case Cl₂O, we have produced.

Percent yield = (Yield produced / Theoretical yield) . 100

Theoretical yield is the mass of product which is produced by sufficent reactant. We replace data:

% yield = (0.71 g/0.86g) . 100 = 82.5%

7 0
3 years ago
Which of these planets has the coldest surface temperature?
lianna [129]

Neptune planet has the coldest surface temperature

<u>Explanation:</u>

With temperatures falling to -218°C in Neptune’s upper atmosphere, the planet is one of the coolest in our Solar System.  Neptune is the most faraway planet from the sun. Astronomers have speculated that Neptune's huge internal temperature and the transfer of heat between the core and outer layers might be the cause why Neptune isn't significantly more chill than Uranus.

Pressures in this area range between 1 and 5 bars and the temperature reaches a high of 72 K. At this temperature, states are becoming for methane to condense, and clouds of ammonia and hydrogen sulfide are thought to form. At its core, Neptune reaches temperatures of up to 7273 K which is equivalent to the surface of the sun.

3 0
3 years ago
Read 2 more answers
3. What methods are you using to test this hypothesis? Outline the steps of the procedure in full sentences.
Ulleksa [173]

Answer:

AHYPOTHISES IS A GUESS

Explanation:

4 0
3 years ago
C) A battery of emf, E drives a current of 0.25A when connected to a 5.5ohms resistor. When
boyakko [2]

Answer:

your ans is battery emf v+1r

5 0
3 years ago
.....................?
liraira [26]

Answer:

Look at the periodic table of elements

Explanation:

Group 1 is the most reactive and to the right

Group 18 is least reactive and all the way to the left. The rest are in between. The groups go vertical.

You'd be able to solve with this information youre welcome

4 0
3 years ago
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