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2 years ago

11

Group 17 is called the halogen family, and the group to its right is called the noble gases. How are the elements in these group

s alike and how are they different?

1 answer:

Firlakuza [10]2 years ago

7 0

Answer: they all have 7 electrons they have different atom sizes

Explanation: hope it helps

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Which of the following is one of the energy conversions taking place in a campfire? Heat to light Heat to kinetic Chemical to li

Blizzard [7]

Answer:Heat to Light

Explanation:

8 0

2 years ago

Read 2 more answers

What mass (in mg) does 2.63 moles of nickel have?

Romashka-Z-Leto [24]

Atomic mass Nickel ( Ni) = 58.69 a.m.u

1 mole ------------- 58.69 g
2.63 moles -------- ??

2.63 x 58.69 / 1 => 154.3547 g

1 g ------------- 1000 mg
154.3547 g ---- ??

154.3547 x 1000 / 1

=> 154,354.7 mg

6 0

2 years ago

How many atoms of lead are contained in 0.532mol?

Colt1911 [192]

Answer:

3.2043 x 10²³

Explanation:

No. of Mole of lead (Pb) = 0.532 mol

No. of atoms of lead = ?

Solution:

Formula Used to calculate

no. of moles = numbers of particles (ions, molecules, atoms) /Avogadro's number

Avogadro's no. = 6.023 x10²³

So,

The formula could be written as

no. of atoms of lead Pb = no. of moles x 6.023 x10²³

Put the values in above formula

no. of atoms of lead Pb = 0.532 mol x 6.023 x10²³

no. of atoms of lead Pb = 3.2043 x 10²³

so 3.2043 x 10²³ atoms of lead are contained in 0.532 mole.

6 0

2 years ago

Which is the greater distance 50 miles or 100 kilometers

slega [8]

The greater distance is 50 miles

4 0

2 years ago

+<br> c)<br> FeCl3 +<br> NH4OH<br> Fe(OH)3<br> NHACI

bixtya [17]

The question is incomplete, the complete question is:

Write the net ionic equation for the below chemical reaction:

(c): $FeCl_3+3NH_4OH\rightarrow Fe(OH)_3+3NH_4CI$

<u>Answer:</u> The net ionic equation is $Fe^{3+}(aq)+3OH^{-}(aq)\rightarrow Fe(OH)_3(s)$

<u>Explanation:</u>

Net ionic equation is defined as the equations in which spectator ions are not included.

Spectator ions are the ones that are present equally on the reactant and product sides. They do not participate in the reaction.

(c):

The balanced molecular equation is:

$FeCl_3(aq)+3NH_4OH(aq)\rightarrow Fe(OH)_3(s)+3NH_4Cl(aq)$

The complete ionic equation follows:

$Fe^{3+}(aq)+3Cl^-(aq)+3NH_4^+(aq)+3OH^{-}(aq)\rightarrow Fe(OH)_3(s)+3NH_4^+(aq)+3Cl^-(aq)$

As ammonium and chloride ions are present on both sides of the reaction. Thus, they are considered spectator ions.

The net ionic equation follows:

$Fe^{3+}(aq)+3OH^{-}(aq)\rightarrow Fe(OH)_3(s)$

5 0

2 years ago