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AVprozaik [17]
3 years ago
14

The following information is obtained from two independent samples selected from two normally distributed populations.

SAT
1 answer:
tatiyna3 years ago
4 0

Answer:

Explanation:

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Calculate the mass of hydrogen in 57. 010 grams of ammonium hydrogen phosphate.
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The mass of hydrogen in 57.010 g ammonium hydrogen phosphate, (NH₄)H₂PO₄ is 2.97 g  

<h3>Determination of mass of 1 mole of (NH₄)H₂PO₄ </h3>

1 mole of (NH₄)H₂PO₄ = 14 + (4×1) + (2×1) + 31 + (16×4) = 115 g

<h3>Determination of the mass of H in 1 mole of (NH₄)H₂PO₄ </h3>

Mass of H = 6H = 6 × 1 = 6 g

<h3>Determination of the mass of H in 57.010 g of (NH₄)H₂PO₄ </h3>

115 g of (NH₄)H₂PO₄ contains 6 g of H.

Therefore,

57.010 g of (NH₄)H₂PO₄ will contain = (57.010 × 6) / 115 = 2.97 g of H

Thus, 2.97 g of Hydrogen, H is present in 57.010 g of (NH₄)H₂PO₄

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3 years ago
How many different nth roots does a nonzero complex number have?
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The Complex nth Roots Theorem with any nonzero complex number has exactly n ∈ N distinct nth roots.  

<h3>What is a non-zero complex number?</h3>

This is the quantity which does not equal zero is said to be nonzero. A real nonzero number must be either positive or negative, and a complex nonzero number can have either real or imaginary part nonzero.

The roots lie on a circle of radius centered at the origin and spaced out evenly by angles of 2π/n.

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What is the most difficult part of the SAT writing &amp; language test?
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