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4 years ago

What is the most important factor in determining climates.

1 answer:

4 0

Latitude - Many factors influence the climate of a region. The most important factor is latitude because different latitudes receive different amounts of solar radiation. The maximum annual temperature of the Earth, showing a roughly gradual temperature gradient from the low to the high latitudes.

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What makes the color of a fire work

exis [7]

Answer:

The use of metal salts. some of the compound produce intense colors when they are burned

4 0

3 years ago

Match each type of rock with the way it is formed

-Dominant- [34]

Answer:

Uh do you have a picture that can help us answer this question...

Explanation:

8 0

3 years ago

Read 2 more answers

Suppose that in the synthesis of isoamyl acetate by Fisher esterification, a student began with 6.103 grams of acetic acid and 3

Troyanec [42]

Answer:

The % yield is 90.68 %

Explanation:

Step 1: Data given

Mass of acetic acid = 6.103 grams

Mass of isoamyl alcohol = 3.728 grams

Mass isoamyl acetate obtained = 4.993 grams

Molar mass acetic acid = 60.05 g/mol

Molar mass of isoamyl alcohol = 88.15 g/mol

Molar mass of isoamyl acetate = 130.19 g/mol

Step 2: The balanced equation

C5H12O + CH3COOH → C7H14O2 +H2O Isoamyl alcohol + acetic acid ---> Isoamyl acetate + water

Step 3: Calculate moles of acetic acid

Moles acetic acid = Mass acetic acid / Molar mass acetic acid

Moles acetic acid = 6.103 grams / 60.05 g/mol

Moles acetic acid = 0.1016 moles

Step 4: Calculate moles isoamyl alcohol

Moles isoamyl alcohol = 3.728 grams / 88.15 g/mol

Moles isoamy lalcohol = 0.04229 moles

Step 5: Calculate limiting reactant

The mole ratio is 1:1 so isoamyl alcohol has the smallest number of moles. So isoamyl alcohol is the limiting reactant. It will be completely be consumed (0.04229 moles).

Acetic acid is in excess, there will be consumed 0.04229 moles.

There will remain 0.1016 - 0.04229 = 0.05931‬ moles

Step 6: Calculate moles of isoamyl acetate

For 1 mole acetic acid , we need 1 mole of isoamyl alcohol, to produce 1 mole isoamyl acetate and 1 mole of H2O

For 0.04229 moles isoamyl alcohol consumed, there will be produced 0.04229 moles of isoamyl acetate.

Step 7: Calculate mass of isoamyl acetate

Mass isoamyl acetate = moles isoamyl acetate * molar mas isoamyl acetate

Mass isoamyl acetate = 0.04229 moles * 130.19 g/mol

Mass isoamyl acetate = 5.506 grams = theoretical yield

Step 8: Calcuate % yield

% yield = actual yield / theoretical yield

% yield = (4.993 / 5.506)*100%

% yield = 90.68 %

The % yield is 90.68 %

7 0

3 years ago

Phenolphthalein indicator is??

Aleonysh [2.5K]

Answer:

Hey mate.....

Explanation:

This is ur answer.....

Phenolphthalein is often used as an indicator in acid–base titrations. For this application, it turns colorless in acidic solutions and pink in basic solutions. It belongs to the class of dyes known as phthalein dyes.

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7 0

3 years ago

What makes an atom able to form a compound? * O different number of neutron than protons O unfilled outer electron shells O same

GaryK [48]

Answer:

same number of protons as electrons

Explanation:

The addition of a neutron can make an atom radioactive. When you change the number of protons in an atom, you will change the atom from one element to a different element. ... If you change the number of electrons in an atom, you will get an ion of the element.

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3 years ago