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lisabon 2012 [21]
3 years ago
14

6 of 16

Chemistry
1 answer:
Arte-miy333 [17]3 years ago
3 0

Answer: D. Physical change

Explanation:

Phase changes are physical changes.

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How many centigrams are in 0.13 oz
Paha777 [63]

Answer:

I think the answer is 368.544 centigrams

Explanation:

I hope I helped

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3 years ago
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Explain how neurotransmitters work.
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Answer and Explanation:

In most of the cases a neurotransmitters is discharged based on what's known as the axon terminal after an activity potential has arrived at the neurotransmitter, a spot where neurons can transmit sign to one another. These cells contain receptors where the synapses can tie and trigger changes in the cells.

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6 0
3 years ago
What mass of NaNO3 is needed to make 3.5 L of 2.2 M solution? (Na = 23.0g, N=14.0g, O=16.0g)
olganol [36]

Answer:

= 654.5 g NaNO3

Explanation:

Molarity = Moles/ volume

Volume = 3.5 L

Molarity = 2.2 M

Therefore;

Moles = Molarity × volume

          = 3.5 L × 2.2 M

          = 7.7 moles

But 1 mole of NaNO3 is 85 g/mol

Mass of NaNO3 = 85 g/mole × 7.7 moles

                          = 654.5 g NaNO3

8 0
3 years ago
Balanced equation: K2S(aq) + BaCl2(aq) =
stepan [7]

Answer:

K2S(aq) + BaCl2(aq) = 2KCl(aq) + BaS(s)

In the image attached, it is explained how the solution is balanced.

8 0
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All of the following increase from left to right across the second period of the periodic table (Na - Ar) EXCEPT
DerKrebs [107]

Answer: effective nuclear charge

Explanation: This is because electrons are added to tell same shell at about the same distance from the nucleus

4 0
3 years ago
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