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Elina [12.6K]
3 years ago
6

What is the density of an unknown object with a mass of 225g and a volume of 500cm3

Chemistry
1 answer:
andrezito [222]3 years ago
3 0

Answer:

0.45 g/cm3

Explanation:

Density = Mass/Volume

225g/500cm3=0.45cm3

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2 bromocyclopentanamine structural formula
Elis [28]

Answer:

The structure is given in attached file.

Explanation:

Explanation

2-bromocyclopentamine (Figure attached) is a synthetic compound which is synthesized by substitution reaction of cyclopentamine and hydrobromide. Its molecular formula and molecular mass are C5H10NBr and 164.05 mol/g respectively.  It is a very reactive compound so it doesn’t available in pure form, it is present in market as a mixture of 2-bromocyclopentamine and Hydrobromide.

Properties :

Its boiling point is 115 0C

Its melting point is – 75 oC

It is highly flammable

It is highly toxic

It is irritant

It is corrosive in nature

5 0
3 years ago
How many non-bonding electrons does phosphorus have?
Eddi Din [679]
10 non-bonding electrons 
8 0
3 years ago
Read 2 more answers
A student is asked to convert measurements from grams to kilograms and from kilograms to grams. His answers are shown in bold in
german
It has to be 2 hope this helps

8 0
3 years ago
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Calculate the percentage by mass of oxygen in trioxonitrate (v) acid, (HNO3). [ H=1, N=14, O=16]​
Vadim26 [7]

Answer:

Percentage by mass of oxygen = 76.20% (Approx)

Explanation:

Given:

HNO3

H=1, N=14, O=16]

Find:

Percentage by mass of oxygen

Computation:

HNO3

Total mass = 1 + 14 + 3(16)

Total mass = 63

Mass of oxygen = (3)(16) = 48

Percentage by mass of oxygen = [48/63]100

Percentage by mass of oxygen = 76.20% (Approx)

4 0
3 years ago
Claims · Evidence • Reasoning A student
sashaice [31]
As with the properties of a substance, the changes that substances undergo can be classified as either physical or chemical. During physical changes a substance changes its physical appearance, but not its composition. The evaporation of water is a physical change.

(I searched that up but here’s an explanation with my own words that you can use):

Change in matter can be classified as a physical change as well as a chemical change due to the properties of substance. A physical change changes substance within its appearance but not its composition. For an example: The evaporation of water is a physical change.

There you go hopefully that helped
3 0
3 years ago
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