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3 years ago

A chemical bond I i which 2 pairs of electrons are shared between two atoms

1 answer:

5 0

A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.

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Look at the balanced equation below:

Crazy boy [7]

Answer:

11.5moles of oxygen gas

Explanation:

The reaction equation is shown below;

C₂H₆O + 3O₂ → 2CO₂ + 3H₂O

We were given 11.5moles of H₂O produced;

Since the equation is balanced;

3 mole of oxygen gas was used to produce 3 mole of water

11.5 moles of water will be produced $\frac{11.5 x 3}{3}$ = 11.5moles of oxygen gas

6 0

3 years ago

What is a human event that can cause an increase in freshwater algae growth ? Please help

coldgirl [10]

Farm water runoff, which causes nitrogen rich fertilizer to be washed into the body of water. The nitrogen feeds the algae bloom.. Hope this helps

8 0

3 years ago

The reaction 2NO(g) + O2(g) → 2NO2(g) is a synthesis reaction. True False

Trava [24]

true

not sure though

but I think

7 0

3 years ago

Read 2 more answers

1. A student determines the density of water to be 0.966g/ml at a

lions [1.4K]

Answer:

The percentage error in the measurement is 2.4% 

Explanation:

The measurement made by the student is $0.966 g/cm^3$ .

But the actual value of density is $0.943 g/cm^3$

The formula to calculate percentage error is

percentage error = $\frac{(measured \ value-actual \ value)}{(actual \ value)} \times 100$

Hence percentage error in this case is given by

Percentage error = $\frac{(0.966-0.943)}{0.943} \times 100$

= $\frac{0.023}{0.943} \times 100=2.4%$

A physical quantities value will be determines by various quantities. If errors are made in measuring any of these quantities there will be error in the measurement of the final physical quantity as well.

Here density of a substance is a derived quantity determined by measuring mass and volume of that substance. If errors are made in mass and volume measurements the density value will also be erroneous.

4 0

3 years ago

Write the molecular formula for a compound with the possible elements c, h, n and o that exhibits a molecular ion at m+ = 100.09

Arlecino [84]

Co2 is correct buddy

5 0

3 years ago