2 years ago

The element that has a valence configuration of 5s2 is Ba Ca Be Sr Mg

Chemistry

1 answer:

marysya [2.9K]2 years ago

5 0

Answer: Sr

Explanation: Strontium electron configuration is [Kr] 5s2. It belongs to group 2 and period 5 of the periodic table.

You might be interested in

Does the amount of a substance affect the properties of a substance?

Veseljchak [2.6K]

No, the properties of a substance are not affected by the amount of a substance.

5 0

3 years ago

Model B: In this model the atom is a solid sphere that cannot be divided up into smaller

vivado [14]

Answer:

They are called corpuscles

Explanation:

5 0

3 years ago

Jason is preparing curry from an Indian cookbook his British brother-in-law gee him for his birthday. Unfortunately, the British

Marina CMI [18]

Answer:

0.99 pounds

2,000 oz

0.423 cups

Explanation:

In order to convert this units we need to look up their equivalences.

1 g equals 0,0022 pounds approximately

Then we need to cross-multiply:

$\frac{1 g}{0.0022 pounds} = \frac{450 g}{ Xpounds} \\x = \frac{450 g x 0.0022 pounds}{1 g}$

450 g equals 0.99 pounds approximately

We can do the same calculation for the other 2 ingredients

1 g equals 16 oz

Then (125 g x 16 oz) / 1 oz = 2,000 oz (or 500 4 oz)

1 cup equals 236.59 ml

Then (100 ml x 1 cup)/ 236.59 = 0.423 cups

6 0

2 years ago

The overall long-term effects of air pollution are not yet certain.<br><br> True<br> False

Viktor [21]

I’m pretty positive the answer is True

6 0

2 years ago

Read 2 more answers

A compound is formed when 171.2 g of carbon reacts with 28.8 g of hydrogen. What is the mass percent of hydrogen in the compound

IgorLugansk [536]

Following the law of conservation of mass, the mass percent of hydrogen in the resulting compound is 14.4%(wt/wt). This is assuming that all of the carbon reacts with all of the hydrogen. The solution is as follows:

mass % = mass hydrogen*100/total mass = 28.8*100/(28.8+171.2) = 14.4%

4 0

3 years ago