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2 years ago

A solid block of substance is 74.0cm x 55.0cm x 35.0cm and has a mass of 5.69 x 105g. (569000)

Chemistry

1 answer:

Annette [7]2 years ago

8 0

Answer:

No, it would sink in water.

Explanation:

Firstly, note that whether an object will float or sink in water is dependent on the density of the object and the water. To calculate density of the object, volume and mass is required.

According to the question, a solid block of substance is 74.0cm x 55.0cm x 35.0cm i.e. the Length (L), width (W) and height (H) are 74cm, 55cm, and 35cm respectively.

Volume = L × W × H

Volume = 74 × 55 × 35

Volume = 142,450 cm^3

Mass of the solid object = 5.69 x 105g. i.e. 569000g

Density = mass / volume

Density = 569000/142450

Density = 3.99438

The density of the solid object is 3.99g/cm^3

Consider the fact that the Density of water is 1g/cm^3. An object will FLOAT in water if the density is lower than that of water while it will SINK if the density is higher than that of water.

Since the density of the solid object is 3.99g/cm^3, which is higher than that of water (1.0 g/cm^3), the solid object will SINK in water.

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A student is given the question: "what is the mass of a gold bar that is 7.379 × 10–4 m3 in volume? the density of gold is 19.3

IRINA_888 [86]

<h3><em>Further Explanation</em></h3>

Density is a quantity derived from the mass and volume

density is the ratio of mass per unit volume

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The unit of density can be expressed in g / cm3 or kg / m3

Density formula:

$\large{\boxed{{\bold{\rho~=~\frac{m}{V}}}}$

ρ = density

m = mass

v = volume

A common example is the water density of 1 gr / cm3

The mass itself is often equated with weight, even though it is different. Mass is the amount of matter in the matter while weight is related to the gravitational force

<em>Known variable</em>

volume gold bar 7.379 × 10⁻⁴ m³

a density of 19.3 g/cm³

<em>Asked</em>

the mass of a gold bar

<em>Answer</em>

volume is known to be 7.379 × 10⁻⁴ m³, then we change it first to units of cm³ adjusting to units of density

7.379 × 10⁻⁴ m³ = 7.379 × 10² cm³

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2 years ago

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Find the molarity of 750 ml solution containing 346 g of potassium nitrate

Zinaida [17]

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=(346/101.068)*(1/0.75)
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2 years ago

kondor19780726 [428]

Explanation:

It is known that 1 gram contains 1000 milligrams. And, mathematically we can represent it as follows.

$\frac{1 g}{1000 mg}$ or $\frac{1000 mg}{1 g}$

So, when we have to convert grams into milligrams then we simply multiply the digit with 1000. And, if we have to convert a digit from milligrams to grams then we simply divide it by 1000.

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