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3 years ago

What evidence is there that marker ink is a mixture

1 answer:

5 0

Ink can be separated into black and other color pigments. This can be done on filter paper by dotting the marker just above the edge and adding ethyl alcohol, which drags the pigments separately across the paper.

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What are the four points of food safety?

KatRina [158]

The four steps of food safety are:

Clean: Wash your hands and clean surfaces often
Separate: Don't cross-contaminate the food
Cook: Cook the food to the right temperature
Chill: Refrigerate promptly

Hope this helps! If you need more help or have any questions just message me! :)

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3 years ago

What would happen to the equilibrium mixture if the chlorine gas was allowed to escape? (explain your answer )

almond37 [142]

Mimicupcakes650 Beginner answered 5 minutes ago ... What would happen to the equilibrium mixture if the chlorine gas was allowed to escape? (explain your answer ) from Gabbymarriott. 1 answer ... Describe the physical and chemical properties of the raft that would be important to ensure your safety. from Dustyy.

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3 years ago

A 33.0 mL sample of 1.15 M KBr and a 59.0 mL sample of 0.660 M KBr are mixed. The solution is then heated to evaporate water unt

Oksi-84 [34.3K]

Answer:

We need 13.06 grams of silver nitrate to precipitate out silver bromide in the final solution

Explanation:

Step 1: Data given

Sample 1: The 1.15 M sample has a volume of 33.O mL

Sample 2: The 0.660 M sample has a volume of 59.0 mL

Molar mass of KBr = 119 g/mol

Molar mass of AgNO3 = 169.87 g/mol

Step 2: Calculate number of moles for both samples

Number of moles = Molarity * Volume

Sample 1: 1.15 M * 33 *10^-3 L = 0.03795 moles

Sample 2: 0.660 M *59*10^-3 L = 0.03894 moles

Total mol KBr = 0.03795 + 0.03894 = 0.07689 moles

Step 3: Calculate total mass

mass = Number of moles * Molar mass

mass = 0.07689 moles * 119 g/moles = 9.15 grams ( in 55mL)

Step 4: Calculate moles of AgBr

AgNO3 reacts with KBr

KBr(aq) + AgNO3(aq) → AgBr(s) + KNO3(aq)

1 mole of KBr consumed, needs 1 mole of AgNO3 to produce 1 mole of AgBr and 1 mole of KNO3

So 0.07689 moles of KBr wll need 0.07689 moles of AgNO3

Step 5: Calculate mass of silver nitrate

mass of AgNO3 = Moles of AgNO3 * Molar mass of AgNO3

mass of AgNO3 = 0.07689 moles * 169.87 g/mol = 13.06 grams

We need 13.06 grams of silver nitrate to precipitate out silver bromide in the final solution

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3 years ago

HELP ME PLEASEE!!!! BRAINLIEST FOR CORRECT ANSWER NO COPY AND PASTE. CLICK ON THE IMAGE

madreJ [45]

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2 years ago

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Rick has taken a loan of $3,200 from the bank to buy new appliances. His first loan payment is due at the end of this month. He

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Answer:

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