All categories

3 years ago

Molecules that form when electrons are shared unequally between atoms are called

Chemistry

1 answer:

gregori [183]3 years ago

4 0

<span>Molecules that form when electrons are shared unequally between atoms are called </span>covalent bond.

You might be interested in

Using the following equation 5KNO2+2KMnO4+3H2SO4=5KNO3+2MnSO4+K2SO4+3H20. Starting with 2.47 grams of KNO2 and excess KMnO4 how

Aleonysh [2.5K]

Given equation : $5KNO_{2} + 2KMnO_{4} + 3H_{2}SO_{4}\rightarrow 5KNO_{3} + 2MnSO_{4} + K_{2}SO_{4} + 3H_{2}O$

Given information = 2.47 grams KNO2 and excess KMnO4 and we need to find grams of water (H2O).

Since KMnO4 is in excess, so grams of water(H2O) can be calculated using grams of KNO2 with the help of stoichiometry.

To find grams of water(H2O) from grams of KNO2 , we need to follow three steps.

Step 1. Convert 2.47 grams of KNO2 to moles of KNO2.

$Moles = \frac{grams}{molar mass}$

Molar mass of KNO2 = 85.10 g/mol

$Moles = 2.47 gram KNO2\times \frac{1 mol KNO2}{85.10 gram KNO2}$

Moles = 0.0290 mol KNO2

Step 2. Convert moles of KNO2 to moles of H2O using mole ratio.

Mole ratio are the coefficient present in front of the compound in the balanced equation.

Mole ratio of KNO2 : H2O is 5 : 3 (5 coefficient of KNO2 and 3 coefficient of H2O)

$0.0290 mol KNO2\times \frac{3 mol H2O}{5 mol KNO2}$

Mole = 0.0174 mol H2O

Step 3. Convert mole of H2O to grams of H2O

Grams = Moles X molar mass

Molar mass of H2O = 18.00 g/mol

$Grams = 0.0174 mol H2O\times \frac{18 g H2O}{1 mol H2O}$

Grams of water = 0.313 grams H2O

Summary : The above three steps can also be done in a singe setup as shown below.

$2.47 gram KNO2\times \frac{(1 mol KNO2)}{(85.10 gram KNO2)}\times \frac{(3 mol H2O)}{(5 mol KNO2)}\times \frac{(18.00 gram H2O)}{(1mol H2O)}$

In the above setup similar units get cancelled out and we will get grams of H2O as 0.313 grams water (H2O)

8 0

4 years ago

How many liters of 0.300 M aluminum (III) hydroxide do you need to titrate 0.300 L of a 0.300 M diprotic acid to the equivalence

Salsk061 [2.6K]

Answer:

0.200L of 0.300 Al(OH)₃ are necessaries

Explanation:

A diprotic acid, H₂X, reacts with aluminium (III) hydroxide, Al(OH)₃ as follows:

3 H₂X + 2 Al(OH)₃ → 6H₂O + Al₂X₃

To solve this question we must find the moles of the H₂X, using the balanced reaction we can find the moles of Al(OH)₃ and its volumen knowing its molar concentration is 0.300M:

<em>Moles H₂X:</em>

0.300L * (0.300mol / L) = 0.0900moles H₂X

<em>Moles Al(OH)₃:</em>

0.0900moles H₂X * (2mol Al(OH)₃ / 3mol H₂X) = 0.0600 moles Al(OH)₃

<em>Volume 0.300M Al(OH)₃:</em>

0.0600 moles Al(OH)₃ * (1L / 0.300moles) =

<h3>0.200L of 0.300 Al(OH)₃ are necessaries</h3>

3 0

3 years ago

Lets say you were doing an experiment on two different chemicals in two different test tubes. One chemical is giving off oxygen

vovangra [49]

For this answer you could smell them and the 1 that almost made you pase out probably is putting off carbon manaxiod

5 0

3 years ago

A blue whale has a length of 28,578 millimeters. What is the length of a blue whale in kilometers? Show your work below by writi

kotegsom [21]

Answer:

Length of whale in km = 0.028578 km

Explanation:

Given:

Length of whale = 28,578 millimeter

Find:

Length of whale in km

Computation:

We know that;

1 km = 1,000,000 mm

So,

Length of whale in km = 28,578 / 1,000,000

Length of whale in km = 0.028578 km

6 0

3 years ago

How would Earths revolution be affected if it had a larger orbit??

Sidana [21]

Answer:

When the Earth rotates on its axis, it prevents air currents from going in a straight line to the north and the south from the equator. It results in one of the effects of rotation of the Earth: the Coriolis Effect.

4 0

3 years ago