Which description best characterizes the motion of particles in a solid?

a metal object has a mass of 9.0g and a volume of 1.5ml. what is the density of the object? density= mass/volume

weeeeeb [17]

The density of the metal object=6.0 $\frac{g}{m l}$

Given:

Volume of the metal object=1.5ml

Mass of the metal object=9.0g

To find:

Density of the metal object

Step by Step Explanation:

Solution:

According to the formula, Density of the metal object can be calculated as

$\rho=\frac{m}{v}$

Where, m=mass of the metal object

$\rho$ =density of the metal object

v=volume of the metal object

We know the values of v=1.5ml and m=9.0g

Substitute these values in the above equation we get

$\rho=\frac{m}{v}$

$\rho$ =9.0/1.5

=6.0 $\frac{g}{m l}$

Result:

Thus the density of the metal object is 6.0 $\frac{g}{m l}$

4 0

3 years ago

O ar se apresenta no estado gasoso, é uma mistura de gases. A poluição do ar é a introdução de qualquer substância que, devido a

MakcuM [25]

Answer:

poluição atmosférica

Explanation:

O que eles estão tentando falar na pergunta é que a que termo nos referimos como a introdução de partículas estranhas na forma de suspensão etc. na atmosfera.

Este termo é conhecido como poluição do ar. É chamado assim porque, adulteramos a constituição original do ar, introduzindo esses novos componentes.

Esses componentes introduzidos muitas vezes têm um efeito adverso na composição da qualidade do ar.

6 0

3 years ago

The melting points of canola oil, corn oil, sunflower oil, and peanut oil are 10°C, –11°C, –17°C, and –2°C. If you cool a mixtur

Vikentia [17]

Answer: the canola oil.

Explanation:

According to the melting points reported, at 5°C canola oil, whose melting point is 10°C, will freeze (become solid), while the other three, corn oil, sunflower oil, and peanut oil, having melting points several degrees below 5°C, will remain in liquid state.

Therefore, by decantation or filtration, which are processes that permit separate solids from liquids in a mixture, you can separate easily the solid canola oil from the other three liquid oils.

After separating the canola oil, If you continue cooling the mixture and reach a temperature of - 5°C. the peanut oil, whose melting point is -2°C, whill freeze and you will be able to separate it (again by decantation or filtration).

The same operation, cooling a third time until a temperature around 12°C, will permit you to separate the remaining two oils.

As you see, the knowledge of the physical properties of the substances is a useful tool to separate mixtures.

7 0

4 years ago

Read 2 more answers

Elements with atomic numbers 112 and 114 have been produced and their iupac names are pending approval. however, an element that

victus00 [196]

Answer is: +113.
Nihonium is a chemical element with symbol Nh and atomic number 113. It has 113 protons (positive electric charge of +1). Protons, beside neutrons (neutral charge), are in the nucleus of every atom. Because only protons in nucleus have charge, charge of element-113 is +113.

8 0

3 years ago

how many moles of hydrogen gas will be produced if you start with 2.5 moles of magnesium and an excess of hydrochloric acid give

Vinil7 [7]

Number of moles of Hydrogen gas produced = 2.5 moles

Given the balanced chemical equation,

$Mg+2HCl \rightarrow MgCl_2+H_2$

This means, 1 mole of Mg and 2 moles of HCl gives 1 mole of Hydrogen gas.

Given that 2.5 moles of Magnesium is taken and an excess of Hydrochloric acid.

The mole ratio of Magnesium and Hydrogen = 1:1

Thus 2.5 moles of Magnesium with an excess of Hydrochloric acid will yield 2.5 moles of Hydrogen gas.

[By referring excess of HCl, we may assume that it contains at least 5 moles of HCl. Then only 2.5 moles of Mg will produce 2.5 moles of Hydrogen gas].

Learn more about the mole ratio at brainly.com/question/19099163

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6 0

2 years ago