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3 years ago

An ion is formed when an atom

Chemistry

2 answers:

EleoNora [17]3 years ago

5 0

An ion is formed when an atom gains or loses electrons.

alex41 [277]3 years ago

3 0

Answer:

lose or gain electrons

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How are radioisotopes different from the standard form of an element

meriva

Answer:

Different isotopes of the same element have the same number of protons in their atomic nuclei but differing numbers of neutrons. Radioisotopes are radioactive isotopes of an element. They can also be defined as atoms that contain an unstable combination of neutrons and protons, or excess energy in their nucleus.

6 0

3 years ago

How many grams of product can be produced by reacting 5.0 gram of aluminum and 22 grams of bromine? 2 Al + 3 Br2 > 2 AlBr3

Crazy boy [7]

Answer:

The mass of AlBr3 is 24.5 grams

Explanation:

Step 1: Data given

Mass of aluminium = 5.0 grams

Mass of bromine = 22.0 grams

Molar mass of aluminium = 26.98 g/mol

Molar mass of br2= 159.8 g/mol

Step 2: The balancced equation

2 Al + 3 Br2 → 2 AlBr3

Step 3: Calculate moles Al

Moles Al = mass Al / molar mass Al

Moles Al = 5.0 grams / 26.98 g/mol

Moles Al = 0.185 moles

Step 4: Calculate moles Br

Moles Br = 22.0 grams / 159.8 g/mol

Moles Br = 0.138 moles

Step 5: Calculate limiting reactant

For 2 moles Al we need 3 moles Br2 to produce 2 moles AlBr3

Br2 is the limiting reactant. It will completely be consumed (0.0313 moles)

Al is in excess. There will react 2/3*0.138 = 0.092 moles

There will remain 0.185- 0.092 = 0.093 moles Al

Step 6: Calculate moles AlBr3

For 2 moles Al we need 3 moles Br2 to produce 2 moles AlBr3

For 0.0313 moles Br2 we'll have 2/3*0.138 = 0.092 moles AlBr3

Step 7: Calculate mass AlBr3

Mass AlBr3 = moles * molar mass

Mass AlBr3 = 0.092 moles * 266.69 g/mol

Mass AlBr3 = 24.5 grams

The mass of AlBr3 is 24.5 grams

3 0

3 years ago

B) How many moles of Na2O can be produced from 13.5 moles Na?

dolphi86 [110]

Answer: 6.75 moles of $Na_2O$ can be produced from 13.5 moles Na

Explanation:

The balanced chemical equation for formation of $Na_2O$ from Na is:

$4Na+O_2\rightarrow 2Na_2O$

According to stoichiometry :

4 moles of Na give = 2 moles of $Na_2O$

Thus 13.5 moles of $Na$ give = $\frac{2}{4}\times 13.5=6.75moles$ of $Na_2O$

Thus 6.75 moles of $Na_2O$ can be produced from 13.5 moles Na

3 0

3 years ago

G Isopropyl methyl ether is slightly soluble with water because the oxygen atom of ethers with or fewer carbon atoms can form a

Inga [223]

Answer:

True

Explanation:

The isopropyl methyl ether is a polar molecule because its dipole moment is different from 0. The ether is formed by a molecule of oxygen between carbons, in this case, the oxygen is bonded to an isopropyl, which has 3 carbons, and to a methyl, with only one carbon, so, the dipole, which is the polar difference between the atoms, will be stronger in the isopropyl bond.

Because of that, the oxygen will have a partial negative charge. The water is also a polar substance, and "like dissolve like". Because water has a dipole in the hydrogen and in the oxygen, the hydrogen of it may bond with the oxygen of the ether, forming a hydrogen bond, which is strong.

5 0

3 years ago

GC-mass spectrometry is used to find the ________ of each compound in a ________. Group of answer choices none of these molecula

sineoko [7]

Answer:

mixture of compounds molecular weight

Explanation:

Gas Chromatography-mass spectrometry is used to find the mixture of compounds of each compound in a molecular weight. The Gas Chromatography also known as Mass Spectrometry (GC/MS) is an instrument that is used to separate chemical mixtures and identifies the components at a molecular level. It is one of the most accurate tools used for analyzing samples of the environment.

6 0

3 years ago