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Taya2010 [7]
3 years ago
15

5. An object is a regular, rectangular, solid with dimensions of 2 cm by 3cm by 2cm. It has a mass of 24 g. find its density.

Chemistry
1 answer:
m_a_m_a [10]3 years ago
3 0

Answer:

Density, D = 2g/cm^3

Explanation:

Given the following data;

Length = 2cm

Width = 3cm

Height = 2cm

Mass = 24g

Density = ?

Volume of a rectangular solid (V) = Length × Weight × Height

Therefore, V = L× W × H

Substituting the values, we have;

V = 2 *3 * 2 = 12

V = 12cm

Density can be defined as the ratio of mass to volume i.e mass all over volume.

Mathematically, Density = \frac{Mass}{Volume}

D = \frac{M}{V}

Substituting the values, we have;

D = \frac{24}{12}

<em>Density, D = 2g/cm^3</em>

Hence, the density of the rectangular solid is 2g/cm^3.

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Flame emission is a method of chemical that uses intensity of light from a flame.
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Explain how plantesimals differ from protoplanets
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Planetesimals are solid objects thought to exist in protoplanetary disks and in

A protoplanet is a large planetary embryo that originated within a protoplanetary disc and has undergone internal melting to produce a differentiated interior.

5 0
3 years ago
Give the name and formula for the acid derived from each of the following anions: (a) perchlorate (b) N03- (c) bromite (d) H2PO4
Vlada [557]

Answer:

(a) Perchloric acid (HClO₄)

(b) Nitric acid (HNO₃)

(c) Bromous acid (HBrO₂)

(d) Phosphoric Acid (H₃PO₄)

Explanation:

Acids are the species which furnish hydrogen ions in the solution. The other specie produced with the hydrogen ion is called its conjugate base.

Thus,

(a) Perchlorate (ClO₄⁻) ion:

The acid that furnish perchlorate ion is <u>perchloric acid (HClO₄)</u>.

(b)  NO₃⁻ ion:

The acid that furnish NO₃⁻ ions is <u>Nitric acid (HNO₃)</u>.

(c) bromite (BrO₂⁻) ion:

The acid that furnish BrO₂⁻ ions is <u>Bromous acid (HBrO₂)</u>.

(d)  H₂PO₄⁻ ion:

The acid that furnish H₂PO₄⁻ ions is <u>Phosphoric Acid (H₃PO₄)</u>.

6 0
3 years ago
Density is a measurable property of matter. How can the density of a substance be determined?
goldenfox [79]

Answer:

I would say D. Measure the length, width, and height of the substance, then multiply these values together

4 0
3 years ago
Read 2 more answers
H2 + CaCl2 --&gt; 2HCl + Ca How many grams of HCl are made when 2.93 g of<br><br> Ca are made?
Sholpan [36]

Answer:

H2 + CaCl2 -> 2HCl + Ca

How many grams of HCl are made when 2.93 g of

Ca are made?

Explanation:

From the given balanced chemical equation, it is clear that:

2mol. of HCl and 1mol. of Ca are produced.

2mol. of HCl weighs --- 73.0g

1mol. of Ca weighs --- 40.0g

Hence,

73.0g of HCl and 40.0g of Ca are produced.

When 2.93g of Ca is produced then, how many grams of HCl will be produced?

=> 2.93g Ca * \frac{73.0g HCl}{40.0g Ca} \\=5.35g HCl

Hence, 5.35g of HCl is formed.

4 0
2 years ago
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