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3 years ago

What is the correct way to write 340,000,000 in scientific notation? Thank you

Chemistry

1 answer:

Kryger [21]3 years ago

5 0

Answer:

3.4=340,000,000 hope this will help.

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How many unpaired electrons are present in the ground state of an atom from each of the following groups?

Paha777 [63]

Explanation:

General electronic configuration for the given groups are as follows.

For 4A(14) : $ns^{2}np^{4}$

This means that there are 4 unpaired electrons in group 4A(14).

For 7A(17) : $ns^{2}np^{5}$

So, there are 7 unpaired electrons present in group 7A(17).

For 1A(1) : $ns^{1}$

Hence, there is only one unpaired electron present in group 1A(1).

For 6A(16) : $ns^{2}np^{4}$

So, there are 6 unpaired electrons present in group 6A(16).

3 0

4 years ago

To what volume should you dilute 60.0 mL of a 4.50 M KI solution so that 30.0 mL of the diluted solution contains 3.25 g of KI?

SpyIntel [72]

Answer:

You should dilute to 414.1 mL

Explanation:

Let's apply the dilution formula to solve this:

M conc . Vol conc = M dil . Vol dil

Molarity for concentrated solution → 4.50 M

Volume for concentrated solution → 60 mL

Molarity for diluted solution → Unknown

Volume for diluted solution → Answer

Let's determine the molarity for diluted solution with data given.

We convert the mass of KI to moles

3.25 g . 1 mol/166 g = 0.0195 moles

Let's convert the volume from mL to L

30 mL . 1 L/1000mL = 0.030 L

Molarity (mol/L) = 0.0195 mol /0.030L = 0.652 M

We replace the data in the formula

4.50 M . 60 mL = 0.652 M . Volume for diluted solution

(4.50M . 60mL) / 0.652M = Volume for diluted solution

414.1 mL = Volume for diluted solution

7 0

3 years ago

Read 2 more answers

Let us assume that cu(oh)2(s) is completely insoluble, which signifies that the precipitation reaction with naoh(aq) (presented

yKpoI14uk [10]

<span>Answer: (0.150 L) x (0.0240 M Fe{3+}) x (3 mol OH{-} / 1 mol Fe{3+}) / (1.39 M NaOH) = 0.00777 L = 7.77 mL NaOH</span>

6 0

4 years ago

When atoms share six electrons, they are joined by a double bond. (.5 points)

Drupady [299]

When atoms share six electrons, they are joined by a double bond. (.5 points)

a. True

b. False?
Is False

5 0

4 years ago

Is the following equation balanced? SO3 + 2H2O H2SO4 no yes

postnew [5]

Answer: No

Explanation: It's not balanced because four oxygen atoms in H2SO4, whereas there are 5 oxygen atoms in the reactants side. Also, there's more hydrogen atoms on the reactants side.

I hope this helps!

7 0

3 years ago