All categories

3 years ago

Using noble gas notation write the electron configuration for the chromium(II) ion

1 answer:

6 0

Since chromium has 24 as its atomic number (which mean that it has 24 proton and 24 electron in neutral ground state), the electron configuration for the chromium would be :

1s^2 , 2s^2 , 2p^6 , 3s^2, 3p^6 , 3d^5 , 4s^1

You might be interested in

According to Le Châtelier's principle, a system at equilibrium will respond to a stress by shifting in the direction that reliev

Romashka [77]

Answer:

a. reduces the stress

Explanation:

3 0

3 years ago

Jeff used an equal arm balance to weigh a 4.312 g sample of sodium chloride. Which of these measurements made by Jeff is the mos

Virty [35]

Answer:

4.3.

Explanation:

Measurements that are close to the known value are said to be accurate, whereas measurements that are close to each other are said to be precise.

The most closest measurement to the known value is 4.3 g.
So, the right choice is: 4.3 g.

3 0

3 years ago

Read 2 more answers

3) Calculate the percent by mass of 3.55 g NaCl dissolved in 88 g water.

kotykmax [81]

Answer:

The percent by mass of 3.55 g NaCl dissolved in 88 g water is 3.88%

Explanation:

When a solute dissolves in a solvent, the mass of the resulting solution is a sum of the mass of the solute and the solvent.

A percentage is a way of expressing a quantity as a fraction of 100. In this case, the percentage by mass of a solution is the number of grams of solute per 100 grams of solution and can be represented mathematically as:

$Percent by mass=\frac{mass of solute}{mass of solution} *100$

In this way it allows to precisely establish the concentration of solutions and express them in terms of percentages.

In this case:

mass of solute: 3.55 g
mass of solution: 3.55 g + 88 g= 91.55 g

Replacing:

$Percentbymass=\frac{3.55}{91.55}*100$

Percent by mass= 3.88%

<u><em>The percent by mass of 3.55 g NaCl dissolved in 88 g water is 3.88%</em></u>

5 0

3 years ago

several dams on the colorado river in texas produce electricity through hydropower. what is an advantage of this type of energy

Ivanshal [37]

Explanation:

hydropower energy is:

-renewable

-clean (doesn't produce toxins or emit harmful gases into the atmosphere)

-environment friendly

-cheap once installed

3 0

2 years ago

How many minutes are in 9,040 ms

aivan3 [116]

Answer:

0.15066667

I tried, hope this helps :)

7 0

3 years ago