which diagram best illustrates the ion-molecule attractions that occur wen the ions NaCl(s) are added to water

The following two reactions are important in the blast furnace production of iron metal from iron ore (Fe2O3):2C(s) + O2(g) -&gt

Inga [223]

Answer: A) 67.1 moles

Explanation:

The balanced reaction is :

$2C(s)+O_2(g)\rightarrow 2CO(g)$

$Fe_2O_3+3CO(g)\rightarrow 2Fe+3CO_2$

To calculate the moles, we use the equation:

$\text{Number of moles of iron}=\frac{\text{Given mass}}{\text {Molar mass}}=\frac{5.00\times 1000g}{56g/mol}=89.3moles$

According to stoichiometry;

2 moles of iron is produced by 3 moles of carbon monoxide

89.3 moles of iron is produced by= $\frac{3}{2}\times 89.3=134$ moles of carbon monoxide

2 moles of carbon monoxide is produced by = 1 mole of oxygen

Thus 134 moles of carbon monoxide is produced by = $\frac{1}{2}\times 134=67.1$ moles of oxygen

3 0

3 years ago

Molecules of sugar are attracted to each other and form crystals. If you place sugar in water, the crystals break apart, but the

suter [353]

Answer:

Explanation:

So here's the thing . Sugar molecule is a molecular solid . It a relatively weak molecule

We all know the formula of glucose ( which is a sugar type molecule ) which is C12 H22 O 11 . This is basically bonded together by dipole dipole forces ( remember that this force of attraction is weak ) .on the other hand you have the solution ( which is usually water) .water is held by strong attraction forces known as hydrogen bonding .since this type of bonding is greater than dipole dipole forces .therefore when glucose is dropped in water . water is easily able to obercome the forces that are keeping the glucose molecule intact . therefore the molecule dissolves and breaks into pieces. Hope this helps

3 0

2 years ago

A pure substance where atoms of two or more elements are chemically bonded to one another

inn [45]

Compound is a pure substance where atoms of two or more elements are chemically bonded togather

8 0

2 years ago

The hydrogen atom is not actually electronegative enough to form bonds to xenon. were the xenon-hydrogen bond to exist, what wou

Marat540 [252]

Answer : The structure of $XeH_4$ will be square-planar.

Explanation :

In the given molecule $XeH_4$ , 'Xe' is the central atom and 'H' is the terminal atom.

Xenon has 8 valence electrons and hydrogen has 1 valence electron. Therefore, the total number of valence electrons are 8 + 4(1) = 12 electrons.

The number of electrons used in Xe-H bonding = 8 electrons

The remaining electrons which are used as lone pair on central atom (Xe) = 12 - 8 = 4 electrons

There are 4 bonding pairs and 2 lone pairs of electrons, they will be arranged in the octahedral arrangement around the central atom with 2 lone pairs of electrons on central atom. The lone pairs are arranged linearly across the central atom. The resulting structure will be square-planar.

The structure of $XeH_4$ is shown below.

5 0

2 years ago

Which force is most responsible for slowing a bicycle down when the brakes are applied

Leya [2.2K]

Friction <span>is most responsible for slowing a bicycle down when the brakes are applied</span>

7 0

3 years ago