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jok3333 [9.3K]
3 years ago
14

How do you use the periodic table to determine the mass of 4 moles of oxygen? Explain your process for getting the answer. Use s

entences or steps.
Chemistry
2 answers:
Nitella [24]3 years ago
8 0

Answer:

read back through your lesson and get the formula

Explanation:

crimeas [40]3 years ago
8 0

Answer:

mass O2 = moles(O2) × molar mass(O2) (a) Calculate moles(Mg) = mass(Mg) ÷ molar mass(Mg) moles(Mg) = 12.2 ÷ 24.31 = 0.50 mol. ...

mass MgO = moles(MgO) × molar mass(MgO) (a) Calculate moles Mg. moles(Mg) = mass(Mg) ÷ molar mass(Mg)

Explanation:

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Rashid [163]

Answer:

2) It can be performed in natural settings

4 0
1 year ago
Imagine you are about to investigate what happens when sodium and potassium are mixed together. Before you begin your experiment
inessss [21]

Explanation:

Potassium and Sodium are both metals on the periodic table. Both elements are found on the s-block of the table. Therefore, it is not possible for both of them to combine to form a compound.

For a compound to form two elements must combine in a definite order to given  single product.

The combination is facilitated by a loss, gain or sharing of electrons between two species. This leads to an attraction between the combining species.

Both Sodium and potassium would prefer to lose electrons and there is no reason for them to combine to form a compound.

6 0
3 years ago
Which compound (s) has(have) a molecular ion at 117 and a peak at 1720 cm-1 in its IR spectrum?
LenaWriter [7]

Answer:

Ethyl Acetate with a chemical configuration of : CH3CO2CH2CH3

Explanation:

Ethyl Acetate has a density of 902 kg/m³, molar mass of 88.11 g/mol and posses a boiling point of 77.1 °C.

It is to be understood that ethyl acetate is the  ester of ethanol and it is mostly produced in mass production and most especially used in the production of domestic materials especially materials like glue, efostics and dissolving agent. This is a highly toxic and flammable substance. However colorless and possess a sweet smell, it can be highly poisonous when ingested.

3 0
3 years ago
In an alkane the mass ratio between hydrogen and carbon is 7/36. What is the formula of alkane?
ch4aika [34]

Answer:

CnH2n+2 formula

Explanation:

Alkanes have the general formula CnH2n+2, so if an alkane had 7 carbon atoms, it would have the molecular formula C7H16.

3 0
1 year ago
Which solution when mixed with a drop ofbromthymol blue will cause the indicator to change from blue to yellow
zheka24 [161]

Answer: A

Explanation: the only way to turn it from blue to yellow is to mix it with an acidic solution.

6 0
2 years ago
Read 2 more answers
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