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Firdavs [7]
4 years ago
10

What controls traits in organisms? A.Cell Membrane B.Cell Wall C.Genes D.Punnett Square

Chemistry
2 answers:
saveliy_v [14]4 years ago
6 0

Answer:c genes

Explanation: I think it's genes because genes control the genetic make up.

BARSIC [14]4 years ago
3 0

Answer:

I believe it's C (the genes)

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What is the density (in g/L) of a gas with
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Answer:

2.22 g/L

Explanation:

There's a relationship using the ideal gas law between molar mass and density: MM=\frac{dRT}{P}, where MM is the molar mass, d is the density, R is the gas constant, T is the temperature, and P is the pressure.

We know from the problem that MM = 32.49 g/mol, T = 458 Kelvin, and P = 2.569 atm. The gas constant, R, in terms of the units atm and Kelvin is 0.08206. Let's substitute these values into the formula:

MM=\frac{dRT}{P}

32.49g/mol=\frac{d*0.08206*458K}{2.569atm}

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4 years ago
Hard water often contains dissolved Ca2+ and Mg2+ ions. One way to soften water is to add phosphates. The phosphate ion forms in
dalvyx [7]

Answer:

30 g

Explanation:

<em>For CaCl₂</em>

3CaCl₂ + 2Na₃PO₄ ⟶ Ca₃(PO₄)₂ + 6NaCl

Moles of CaCl₂ = <em>c</em>×<em>V</em> = 5.0 × 10⁻² × 2.0 = 0.100 mol

Moles of Na₃PO₄ = 0.100 × 2/3 = 0.0667 mol

Mass of Na₃PO₄ = 0.0667 × 163.94 = 10.9 g

———————————————————

<em>For Mg(NO₃)₂ </em>

3Mg(NO₃)₂  + 2Na₃PO₄ ⟶ Mg₃(PO₄)₂ + 6NaCl

Moles of Mg(NO₃)₃ = <em>c</em>×<em>V</em> = 8.5 × 10⁻² × 2.0 = 0.170 mol

Moles of Na₃PO₄ = 0.170 × 2/3 = 0.113 mol

Mass of Na₃PO₄ = 0.113 × 163.94 = 1 g

—————————————————

Total mass of Na₃PO₄ = 10.9 + 18.6 = 29.5 g

To two significant figures, mass = 30 g

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