All categories

3 years ago

Which combinations of particles form ionic bonds/compounds?

Chemistry

1 answer:

Rashid [163]3 years ago

6 0

Answer:

Iconic bond is formed by cation and anion. A compound is made when atoms of two or more elements bond in a chemical reaction.

Explanation:

You might be interested in

Solve the 3 questions

Dmitrij [34]

Answer:

what kind of math is this

Explanation:

5 0

3 years ago

assuming that each human being has 60 trillion body cells in that the earths population is 6 billion calculate the total number

sesenic [268]

3.6 x 10²³

Explanation:

Given parameters:

Number of cell per body = 60 trillion body cells

Population of the earth = 6 billion

Unknown:

Total number of living human body cells = ?

Solution:

To solve this problem, simply find the product:

Total number of living human body cells = number of cell per body x population of the earth

1 trillion = 1 x 10¹²

60 trillion = 6 x 10¹³

1 billion = 1 x 10⁹

6 billion = 6 x 10⁹

Total number of living human body cells = 6 x 10¹³ x 6 x 10⁹

= 6 x 6 x 10⁽¹³⁺⁹⁾

= 36 x 10²² or 3.6 x 10²³

learn more:

Product brainly.com/question/10541435

#learnwithBrainly

7 0

4 years ago

Enter your answer in the provided box. Calculate the number of moles of CrCl, that could be produced from 49.4 g Cr202 according

Mrrafil [7]

Answer:

0.4694 moles of CrCl₃

Explanation:

The balanced equation is:

Cr₂O₃(s) + 3CCl₄(l) → 2CrCl₃(s) + 3COCl₂(aq)

The stoichiometry of the equation is how much moles of the substances must react to form the products, and it's represented by the coefficients of the balanced equation. So, 1 mol of Cr₂O₃ must react with 3 moles of CCl₄ to form 2 moles of CrCl₃ and 3 moles of COCl₂.

The stoichiometry calculus must be on a moles basis. The compounds of interest are Cr₂O₃ and CrCl₃. The molar masses of the elements are:

MCr = 52 g/mol

MCl = 35.5 g/mol

MO = 16 g/mol

So, the molar mass of the Cr₂O₃ is = 2x52 + 3x35.5 = 210.5 g/mol.

The number of moles is the mass divided by the molar mass, so:

n = 49.4/210.5 = 0.2347 mol of Cr₂O₃.

For the stoichiometry:

1 mol of Cr₂O₃ ------------------- 2 moles of CrCl₃

0.2347 mol of Cr₂O₃----------- x

By a simple direct three rule:

x = 0.4694 moles of CrCl₃

6 0

3 years ago

In which situation will the friction between the object and surface on which it is moving be increased. A the object is pushed o

aliina [53]

Answer:

C the object is pushed with greater force against the surface

Explanation:

The force of friction between an object and a surface is the resistive force exerted by the surface on the object, due to the roughness of the two surfaces, and that tends to resist the motion of sliding of the object over the surface.

The force of friction exerted on an object over a surface is given by

$F_f=\mu N$

where

$\mu$ is the coefficient of friction, whose value depends on the roughness of the surface

N is the normal reaction exerted by the sutrface on the object

Let's now analyze each statement; here we want the force of friction to be increases:

A the object is pushed over a long distance. --> FALSE, this is independent on the force of friction.

b the weight of the moving object is decreased. --> FALSE: if the weight decreases, the normal reaction decreases, so the force of friction decreases as well.

C the object is pushed with greater force against the surface. --> TRUE: in this case, the normal reaction increases, so the force of friction increases.

D the surface on which the object is moving is made smoother --> FALSE: in this case, the coefficient of friction decreases, so the force of friction decreases.

4 0

3 years ago

Which set of atoms have 3 valence electrons?

ad-work [718]

Answer:

boron, aluminum, and gallium

Explanation:

They are in group 3A on the periodic table which means they have 3 valence electrons

6 0

3 years ago