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2 years ago

List five noncommunicable diseases and five communicable diseases. What factors cause noncommunicable diseases?

Chemistry

1 answer:

MaRussiya [10]2 years ago

7 0

Answer:

Communicable: Flu, Strep, Cold, Norovirus, URI

Non: Cancer, DIabetes, Arthritis, Bladder infections, Kidney disease

If a fever is present, it it communicable.

Hope this helps fam!

~LocoCoco

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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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3 years ago

Name a chemical that is safe to use in food in small amounts.

Mrrafil [7]

Answer:

Phthalates.

Perfluoroalkyl chemicals (PFCs)

Perchlorate

Artificial food colors

Nitrates and nitrites

Explanation:

I hope this help

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2 years ago

The equation below represents the overall cell reaction for an electrochemical cell that undergoes a spontaneous reaction. Fe(s)

Natalija [7]

Its b Fe(s) Fe2+(aq) + 2e– E = +0.44 V

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2 years ago

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Compared to most substances, water is unusual because it ____ when it goes from the liquid to solid state.

yuradex [85]

Answer:

expands

Explanation:

Most substances become increasingly compressed when frozen solid, but water is a famous exception.

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3 years ago

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The density of Interstellar dust is very high. O True O False

8_murik_8 [283]

Answer:

False

Explanation:

The density of Interstellar dust is very low,yet it still blocks starlight because. .....the Dust emission nebulae like M42 occur only near star that emit large amount of. ......Hydrogen is the major gas in the interstellar medium.

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3 years ago

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