All categories

3 years ago

How are ions formed?

Chemistry

1 answer:

Fiesta28 [93]3 years ago

7 0

Answer: Ions are formed by the addition of electrons to, or the removal of electrons from,

Explanation:

You might be interested in

CAN SOMEONE HELP ME WITH THIS‼️‼️‼️‼️I WILL ADD YOU AS A FRIEND AND BRAINLIEST ‼️‼️‼️‼️

Sergeu [11.5K]

Answer:

answers are D and F

Explanation:

8 0

3 years ago

How many moles of Al are necessary to form 45.0 g of AlBr, from this

drek231 [11]

Answer:

0.169 mole of Al

Explanation:

We'll begin by by calculating the number of mole in 45 gof AlBr₃. This can be obtained as follow:

Mass of AlBr₃ = 45 g

Molar mass of AlBr₃ = 27 + (3×80)

= 27 + 240

= 267 g/mol

Mole of AlBr₃ =?

Mole = mass /molar mass

Mole of AlBr₃ = 45 / 267

Mole of AlBr₃ = 0.169 mole

Finally, we shall determine the number of mole of Al needed to produce 45 g (i.e 0.169 mole) of AlBr₃. This can be obtained as illustrated below:

2Al + 3Br₂ —> 2AlBr₃

From the balanced equation above,

2 moles of Al reacted to produce 2 moles of AlBr₃.

Therefore, 0.169 mole of Al will also react to produce 0.169 mole of AlBr₃.

Thus, 0.169 mole of Al is needed for the reaction.

3 0

3 years ago

If a=1/2(a+b)h,express a in terms of A,b and h. pls solve with step by step

DedPeter [7]

Answer:

$a = \frac {2A - bh}{h}$

Explanation:

Given the following mathematical expression;

A = ½(a + b)h

To make a the subject of formula (express a in terms of A, b and h);

First of all, we would cross-multiply;

2A = (a + b)h

Opening the bracket, we have;

2A = ah + bh

Rearranging the mathematical expression, we have;

ah = 2A - bh

$a = \frac {2A - bh}{h}$

6 0

3 years ago

An embankment is best defined as __________. A. the process of cutting down all of the trees and plant life in an area, with no

jek_recluse [69]

Answer:

C. A stretch of raised land, often built to help control flooding and the flow of a river.

Explanation:

Embankments are made typically of construction adjacent to the river from spoil excavated from its bank.

4 0

3 years ago

Read 2 more answers

Fill in the coefficients that will balance the following reaction:

vfiekz [6]

6NaC₂H₃O₂ + Fe₂O₃ → 2Fe(C₂H₃O₂)₃ + 3Na₂O

Explanation:

Given equation;

NaC₂H₃O₂ + Fe₂O₃ → Fe(C₂H₃O₂)₃ + Na₂O

To find the coefficient that will balance this we equation, let us set up simple mathematical algebraic expressions that we can readily solve.

Let us have at the back of our mind that, in every chemical reaction, the number of atom is usually conserved.

aNaC₂H₃O₂ + bFe₂O₃ → cFe(C₂H₃O₂)₃ + dNa₂O

a, b, c and d are the coefficients that will balance the equation.

conserving Na; a = 2d

C: 2a = 6c

H: 3a = 9c

O; 2a + 3b = 6c + d

Fe: 2b = c

let a = 1

solving:

2a = 6c

2(1) = 6c

c = $\frac{2}{6} = \frac{1}{3}$

2b = c

b = $\frac{1}{2} x \frac{1}{3}$ = $\frac{1}{6}$

d = 2a + 3b - 6c = 2(1 ) + (3 x $\frac{1}{6}$ ) - (6 x $\frac{1}{3}$ ) = $\frac{1}{2}$

Now multiply through by 6

a = 6, b = 1, c = 2 and d = 3

6NaC₂H₃O₂ + Fe₂O₃ → 2Fe(C₂H₃O₂)₃ + 3Na₂O

learn more:

Balanced equation brainly.com/question/9325293

#learnwithBrainly

6 0

3 years ago