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3 years ago

What is metallurgy?

1 answer:

8 0

Metallurgy is the science and technology of metals and alloys. The study of metallurgy can be divided into three general groups: ... Process metallurgy is concerned with the extraction of metals from their ores and the refining of metals.

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An object's velocity can be described by its acceleration and direction. True False

coldgirl [10]

Answer:

False

Explanation:

An object's velocity can be described by it's direction. Because velocity is a vector. Besides velocity and acceleration are different units they can't be described by each other.

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3 years ago

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yawa3891 [41]

Mitosis produces 2 haploid cells that are identical to each other while meiosis produces 4 haploid cells that are genetically uniqu

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3 years ago

The Henry's Law constant of methyl bromide, CH3Br, is KH = 0.159 mol/(L ∙ atm) at 25°C. What is the solubility of methyl bromide

Tanzania [10]

Answer:

Henry's law constant for a gas ch3br

28 The Henry's Law constant of methyl bromide, CH3Br, is k = 0.159 mol/(L⋅atm) at 25°C.

Explanation:

4 0

3 years ago

Enter the chemical formula of a binary molecular compound of hydrogen and a Group 6A element that can reasonably be expected to

Ber [7]

Answer:

H₂Se

Explanation:

A way of estimating the acidity of a weak acid is by analizing the stability of the formed anion. In this case, we should find a Group 6A element that in its anionic forms (HX⁻ and X⁻²) is more stable than HS⁻ and S⁻², thus it would be more acidic in aqueous solution.

The anionic forms of Se are more stable than the forms of S, similarly to how Br⁻ is more stable than Cl⁻.

8 0

3 years ago

2.50g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have a molecular molar mass of 12

Art [367]

Answer:

Molecular Formula = C₁₀H₈

Explanation:

Step 1: Calculating Moles for each Element:

C = Mass of CO₂ × (1 mol of CO₂÷ M.Mass of CO₂) × (1 mol of C ÷ 1 mol of CO₂)

C = 8.60 g × (1 mol of CO₂÷ 44.011 g.mol⁻¹) × (1 mol of C ÷ 1 mol of CO₂)

C = 0.1954 mol

H = Mass of H₂O × (1 mol of H₂O ÷ M.Mass of H₂O) × (2 mol of H ÷ 1 mol of H₂O)

H = 1.41 g × (1 mol of H₂O ÷ 18.106 g.mol⁻¹) × (2 mol of H ÷ 1 mol of H₂O)

H = 0.1557 mol

Step 2: Calculate the Smallest whole number ratio as,

C H

0.1954 0.1557

0.1954/0.1557 0.1557/0.1557

1.25 1

Multiply ratio by 4,

5 4

Result:

Empirical Formula of Propane is C₅H₄

Step 3: Calculate Molecular Formula:

Molecular formula is calculated by using following formula,

Molecular Formula = n × Empirical Formula ---- (1)

Also, n is given as,

n = Molecular Weight / Empirical Formula Weight

Molecular Weight = 128.0 g.mol⁻¹

Empirical Formula Weight = 5 (C) + 4 (H) = 64 g.mol⁻¹

So,

n = 128.0 g.mol⁻¹ ÷ 64 g.mol⁻¹

n = 2

Putting Empirical Formula and value of "n" in equation 1,

Molecular Formula = 2 × C₅H₄

Molecular Formula = C₁₀H₈

4 0

3 years ago

What is metallurgy?​

What is metallurgy?