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2 years ago

Which of the following substances are not homogeneous mixtures?

Chemistry

1 answer:

Tanya [424]2 years ago

7 0

Answer: it’s B

Explanation:

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Plz help with this digestive system

VMariaS [17]

Answer:

(4) mechanical digestion

(5) chemical digestion

(6) enzymes

(7) pharynx

(8) peristalsis

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2 years ago

Read 2 more answers

In the laboratory a student combines 47.8 mL of a 0.321 M aluminum nitrate solution with 21.8 mL of a 0.366 M aluminum iodide so

alex41 [277]

Answer: The final concentration of aluminum cation is 0.335 M.

Explanation:

Given: $V_{1}$ = 47.8 mL (1 mL = 0.001 L) = 0.0478 L

$M_{1}$ = 0.321 M, $V_{2}$ = 21.8 mL = 0.0218 L, $M_{2}$ = 0.366 M

As concentration of a substance is the moles of solute divided by volume of solution.

Hence, concentration of aluminum cation is calculated as follows.

$[Al^{3+}] = \frac{M_{1}V_{1} + M_{2}V_{2}}{V_{1} + V_{2}}$

Substitute the values into above formula as follows.

$[Al^{3+}] = \frac{M_{1}V_{1} + M_{2}V_{2}}{V_{1} + V_{2}}\\= \frac{0.321 M \times 0.0478 L + 0.366 M \times 0.0218 L}{0.0478 L + 0.0218 L}\\= \frac{0.0153438 + 0.0079788}{0.0696}\\= 0.335 M$

Thus, we can conclude that the final concentration of aluminum cation is 0.335 M.

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2 years ago

True or false; when something heats up, New energy is created, and when something cool down, Energy is destroyed.

Ann [662]

Answer:

This is false.

Explanation:

This statement directly opposes the first law of thermodynamics which states that energy can neither be created nor destroyed, but can transfer from one source to another.

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2 years ago

What are middle-latitude cyclones?

dedylja [7]

your answer is B low-pressure systems that cause stormy weather

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2 years ago

What is a process used to separate homogeneous mixtures using physical changes

navik [9.2K]

Answer:

Evaporation

Explanation:

with the help of evaporation , the liquid components are separated out from solid components easily .

6 0

2 years ago