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3 years ago

What is the atomic charge of boron

1 answer:

3 0

Boron can be combined both with metallic elements as nonmetallic to Covalent compounds forming, since in no case give rise to Ionic States, cations (positively charged ions) or anions (negatively charged ions).

hope this helps!

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Match the followings.

insens350 [35]

Answer:

Explanation:

Here, we are to copy and complete the paragraph with the correct options as given below in the question.

Before that, let us have an understanding of what a conversion factor is all about.

A conversion factor refers to a formula that is being used to change over an estimation in a given arrangement of units to its comparable estimation in another arrangement of units. Subsequently, the formula comprises both a number and its unit.

So;

$\text{You can check that you have written the correct conversion factors for an }$

$\text{equality by looking at the numbers and units in each; the information on }$

$\text{one side of the equity appears in the of a conversion factor while the }$

$\text{information on the other side of the equity appears in the denominator.}$

$\text{To generate a second conversion factor, we "turn over" the first }$

$\text{conversion factor so the numbers and units in the numerator and }$

$\text{denominator switch places.}$

5 0

3 years ago

What is the perecentage yield of a reaction in which 200g PCl3 reacts with excess water to form 128g HCl according to the f.F re

castortr0y [4]

Answer:

The percentage yield is 80.36% (see calculations in attachment).

Explanation:

The theoretical yield of the reaction is the amount of product that would result if all the limiting reagent reacted. The theoretical yield is calculated using the balanced equation.

In practice, the actual yield, or the amount of product actually obtained from a reaction, is almost always less than the theoretical yield.

To determine how efficient this reaction is, we need to calculate the percent yield, which describes the proportion of the actual yield to the theoretical yield. It is calculated as follows:

$%yield = actual yield ÷ theoretical yield × 100%$

First we need to make sure that the equation is properly balanced. In the question they provide the balanced equation.

Since water is in excess, we calculate the theoretical yield using PCl₃.

6 0

3 years ago

How to purify ammonia

padilas [110]

In order to purify ammonia to high purity, two basic methods are used. The older one consists in passing gaseous ammonia containing 80 ppm of impurities under atmospheric pressure through liquid ammonia with dissolved metallic sodium.

5 0

3 years ago

Convert 4.500000000 to scientific notation

aniked [119]

I think it’s 4.5 x 10^9

7 0

4 years ago

Help help please

ladessa [460]

Substances that exist in solution almost completely as ions are called strong electrolytes. Therefore, the answer is C.

8 0

3 years ago