All categories

3 years ago

An atom that normally has __________ electrons in its outer (valence) shell tends not to form chemical bonds with other atoms.

Chemistry

1 answer:

goblinko [34]3 years ago

5 0

8 valence shell electrons.

You might be interested in

Based on the crystal-field strengths cl- < f- < h2o < nh3 < h2nc2h4nh2, which octahedral ti (iii) complex below has

kati45 [8]

Based on the crystal field strength, Cl ligand would give the longest d-d transition when complexed with Ti(III). as this is the weak field ligand and would cause minimum splitting of d orbitals.

8 0

3 years ago

Which of the following is not an organic compound? OC6H14 O CO₂ OCH4 C12H22011

lana66690 [7]

Answer:

Co2

Explanation

An organic compound includes Carbon and Hydrogen both bonded

4 0

2 years ago

When magnesium reacts with hydrochloric acid, hydrogen gas is formed: 2HCl + Mg → H2 + MgCl2. What is the volume of hydrogen pro

Maksim231197 [3]

Answer:- C. 16.4 L

Solution:- The given balanced equation is:

$2HCl+Mg\rightarrow H_2+MgCl_2$

From this equation, there is 2:1 mol ratio between HCl and hydrogen gas. First of all we calculate the moles of hydrogen gas from given grams of HCl using stoichiometry and then the volume of hydrogen gas could be calculated using ideal gas law equation, PV = nRT.

Molar mass of HCl = 1.008 + 35.45 = 36.458 gram per mol

The calculations are shown below:

$49.0gHCl(\frac{1molHCl}{36.458gHCl})(\frac{1molH_2}{2molHCl})$

= $0.672molH_2$

Now we will use ideal gas equation to calculate the volume.

n = 0.672 mol

T = 25 + 273 = 298 K

P = 101.3 kPa = 1 atm

R = $0.0821\frac{atm.L}{mol.K}$

PV = nRT

1(V) = (0.672)(0.0821)(298)

V = 16.4 L

From calculations, 16.4 L of hydrogen gas are formed and so the correct choice is C.

7 0

3 years ago

How many moles are there in 814.504 g of H2O?

earnstyle [38]

First you need to calculate the molar mass of H2O. To do that, look at the periodic table and add up the AMUs (atomic mass units)

H = 1.01
O = 16.0

1.01 • 2 + 16.0 = 18.02

Next, use stoichiometry to convert grams into moles. To do that, divide 814.504g by the number of grams in one mole of H2O.

814.504 ÷ 18.02 = 45.2 moles

There are 45.2 moles in 814.504 grams of H2O.

6 0

3 years ago

Energy levels tell us how many _______ there are in an atom.

steposvetlana [31]

Answer:

Energy levels tell us how many electrons there are in an atom.

Hope this helps!

8 0

3 years ago