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Korolek [52]
3 years ago
11

Does heat only flow upward? Yes or No?

Chemistry
2 answers:
aksik [14]3 years ago
8 0
No it definitely doesn’t
Vlad1618 [11]3 years ago
7 0

Answer:

no

Explanation

heat just flows from hot to cold

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The respiratory system is what brings in food and breaks it down True or false
Gala2k [10]

Answer:

false

Explanation:

the respiratory system includes the lungs and heart

not food

5 0
2 years ago
Suppose 1.87g of nickel(II) bromide is dissolved in 200.mL of a 52.0mM aqueous solution of potassium carbonate.
Reika [66]

Answer:

0.0428 M

Explanation:

Because we're asked to calculate the molarity of nickel(II) cation, we need to <u>determine all sources for that species</u>, in this case, all Ni⁺² comes from the nickel(II) bromide solid (NiBr₂).

We use the molecular weight of NiBr₂ to calculate the moles of Ni:

1.87 g NiBr₂ ÷ 218.49g/mol * (1molNi⁺²/1molNiBr₂) =  8.55x10⁻³ mol Ni⁺²

Then we <u>divide the moles by the volume in order to calculate the concentration</u>:

8.55x10⁻³ mol Ni⁺² / 0.200 L = 0.0428 M

7 0
3 years ago
Low tide____.
Fantom [35]

Answer:

i think the answer is A

Explanation:

because in some areas, a regular pattern occurs of one high tide and one low tide each day,

8 0
3 years ago
Read 2 more answers
Calcium + zinc nitrate -------&gt;
Snezhnost [94]

Answer:

c

Explanation:

there will be displacement reaction taking place

8 0
3 years ago
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Which property is better explained by the band theory than by the sea-of-electrons model?
Sonbull [250]
Luster is the correct answer.
8 0
3 years ago
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