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Studentka2010 [4]
3 years ago
9

Which element has this electron configuration? astatine bromine chlorine fluorine

Chemistry
2 answers:
lapo4ka [179]3 years ago
6 0
The halogen element contains the electron configuration: asthetine, bromine, chlorine, flourine
Anna11 [10]3 years ago
4 0

Answer:

the correct answer is chlorine

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Cesium frequently is used in photocells because its work function (3.43 × 10(to the -19th power) J) is the lowest of all the ele
d1i1m1o1n [39]

Answer:

I have no idea how to do this question its hard for me

Explanation:

4 0
3 years ago
The number of cycles of a periodic wave occurring per unit time is defined as a waves
katrin2010 [14]
How many cycles happen in a given unit of time is called a wave's frequency.
8 0
4 years ago
Convert 5 pounds to kilograms <br> Help me pleaseeee
s2008m [1.1K]

Answer:

2.268

Explanation:

5 lb × 0.45359237 = 2.26796185 kg

How to convert Pounds to Kilograms

1 pound (lb) is equal to 0.45359237 kilograms (kg).

1 lb = 0.45359237 kg

The mass m in kilograms (kg) is equal to the mass m in pounds (lb) times 0.45359237:

m(kg) = m(lb) × 0.45359237

Example

Convert 5 lb to kilograms:

m(kg) = 5 lb × 0.45359237 = 2.268 kg

Hope this helped!!!

6 0
3 years ago
Read 2 more answers
Calculate (a) the number of moles of hydrogen required to react with 0.0969 moles of nitrogen, and (b) the number of moles of am
Bumek [7]

Answer:

The answer to your question is:

Explanation:

Data

moles H=?

moles of N = 0.0969

moles of NH₃=?

                            N₂ (g)  + 3 H₂ (g)  ⇒   2NH₃ (g)

Process

1.- Set a rule of three to calculate the moles of hydrogen

                         1 mol of nitrogen  -------------   3 moles of hydrogen

                         0.0969 moles of N ----------     x

                         x = (0.0969 x 3) / 1

                         x = 0.2907 moles of hydrogen          

2.- Set a rule of three to calculate the moles of ammonia

                        1 mol of nitrogen --------------  2 moles of ammonia

                        0.0969 mol of N --------------   x

                        x = (0.0969 x 2) / 1

                        x = 0.1938 moles of ammonia                

5 0
4 years ago
If you are given 608 grams of calcium phosphate Ca3(PO4)2, how many moles would you have? *
Anika [276]

Answer:

You would have 1.96 moles.

Explanation:

You are given 608 grams of calcium phosphate Ca₃(PO₄)₂.

Molar mass (M) is the amount of mass that a substance contains in one mole. This substance can be an element or a compound.

Since the molar mass of the compound Ca₃(PO₄)₂ is 310 g / mole, and taking into account the definition of molar mass, you can apply the following rule of three: if 310 grams of Ca₃(PO₄)₂ are contained in 1 mole, 608 grams of the compound in how many moles are present?

moles=\frac{608 grams* 1 mole}{310 grams}

moles= 1.96

<u><em>You would have 1.96 moles.</em></u>

6 0
3 years ago
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