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MariettaO [177]

2 years ago

11

At the beach, Kim noticed that breezes blew from the ocean to the land during the day and from the land to the ocean at night. W

hich type of heat transfer causes these breezes?

2 answers:

Cloud [144]2 years ago

5 0

Sea breeze the other person is a hundred percent write

larisa86 [58]2 years ago

3 0

Sea breeze should be the right answer

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A 13 g sample of P4010 contains how many

Alex777 [14]

Answer:

$\large \boxed{5.5 \times 10^{22}\text{ molecules of P$_{2}$O}_{5}}$

Explanation:

You must calculate the moles of P₄O₁₀, convert to moles of P₂O₅, then convert to molecules of P₂O₅.

1. Moles of P₄O₁₀

$\text{Moles of P$_{4}$O}_{10} = \text{13 g P$_{4}$O}_{10} \times \dfrac{\text{1 mol P$_{4}$O}_{10}}{\text{283.89 g P$_{4}$O}_{10}} = \text{0.0458 mol P$_{4}$O}_{10}$

2. Moles of P₂O₅

P₄O₁₀ ⟶ 2P₂O₅

The molar ratio is 2 mol P₂O₅:1 mol P₄O₁₀

$\text{Moles of P$_{2}$O}_{5} = \text{0.0458 mol P$_{4}$O}_{10} \times \dfrac{\text{2 mol P$_{2}$O}_{5}}{\text{1 mol P$_{4}$O}_{10}} = \text{0.0916 mol P$_{2}$O}_{5}$

3. Molecules of P₂O₅

$\text{No. of molecules} = \text{0.0916 mol P$_{2}$O}_{5} \times \dfrac{6.022 \times 10^{23}\text{ molecules P$_{2}$O}_{5}}{\text{1 mol P$_{2}$O}_{5}}\\\\= \mathbf{5.5 \times 10^{22}}\textbf{ molecules P$_{2}$O}_{5}\\\text{There are $\large \boxed{\mathbf{5.5 \times 10^{22}}\textbf{ molecules of P$_{2}$O}_{5}}$}$

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When Na and Cl combine to form a compound, which atom(s) will become a cation?

vivado [14]

Na only because cation is a positive ion whole cl is a negative ion in anion

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What is the correct name for the chemical formula N408?

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Answer:

molar mass (molar weight)

Explanation:

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Find the density of a piece of glass with a mass of 500g and a volume of 200cm3

kykrilka [37]

Density = mass/volume
D = 500 g /200 cm^3
D = 2.5 g/cm^3

hope this helps!

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Which of the following is necessary for photosynthesis <br> A.calcium<br> B.glucose<br> C.water

Mamont248 [21]

C because the plant needs water to go through photosynthesis

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