All categories

3 years ago

Write the complete electron configuration for sodium ion

Chemistry

1 answer:

Katena32 [7]3 years ago

7 0

Sodium ion has 10 electrons. So: 1s^2 2s^2 2p^6

You might be interested in

Why does liquids rate of evaporation increase when the liquid is heated

ivann1987 [24]

Boiling liquids that want to escape gas

4 0

3 years ago

A chemical property is _______________.

deff fn [24]

Answer:

Explanation:

chemical bonds between atoms are formed or broken.

Still stuck? Get 1-on-1 help from an expert tutor now.

5 0

2 years ago

What’s the number 9.1x10^3 in standard form

mafiozo [28]

Answer:

.0091

Explanation:

3 0

3 years ago

A reaction that absorbs energy

coldgirl [10]

Answer:

Endothermic Reaction

Explanation:

5 0

3 years ago

Read 2 more answers

A 4.36 g sample of an unknown alkali metal hydroxide is dissolved in 100.0 ml of water. an acid-base indicator is added and the

Fofino [41]

Answer:

(a) $102.6g/mol$

(b) Rubidium

Explanation:

Hello,

This titration is carried out by assuming that the volume of base doesn't have a significant change when the mass is added, thus, we state the following data a apply the down below formula to compute the molarity of the base solution:

$V_{base}=0.1L; M_{acid}=2.5M, V_{acid}=0.017L\\V_{base}M_{base}=V_{acid}M_{acid}$

Solving for the molarity of base we've got:

$M_{base}=\frac{M_{acid}*V_{acid}}{V_{base}}=\frac{2.50M*0.017L}{0.1L} =0.425M=0.425mol/L$

Now, we can compute the moles of the base as:

$n_{base}=0.425mol/L*0.1L=0.0425mol$

(a) Now, one divides the provided mass over the previously computed moles to get the molecular mass of the unknown base:

$\frac{4.36g}{0.0425mol} =102.6g/mol$

(b) Subtracting the atomic mass of oxygen and hydrogen, the metal's atomic mass turns out into:

$102.6g/mol-16g/mol-1g/mol=85.6g/mol$

So, that atomic mass dovetails to the Rubidium's atomic mass.

Best regards.

8 0

3 years ago