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4 years ago

3) If an electrical appliance has 150.0 V applied causing a current of 2.34 amps, what is the

Chemistry

1 answer:

ASHA 777 [7]4 years ago

5 0

Answer:

The resistance would be 64.10 ohms.

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. Which layer in a soil profile contains the most organic matter?

Klio2033 [76]

Answer:

Option (C)

Explanation:

The O horizon is the top layer of the soil, which occurs as both thick and thin soil at different places, and it is absent in certain places. It is comprised of organic matter which mainly includes the decomposed leaves and also sometimes, the dead remains of animals are also found which enhances the quality of the soil. This layer is also known as the humus or organic layer.

Thus, the correct answer is option (C).

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3 years ago

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Check Your Progress

viktelen [127]

Answer:

Explanation:

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3 years ago

How many grams of molybdenum(Mo) are in 2.68E24 atoms of Mo?

loris [4]

<h3>Answer:</h3>

427 g Mo

<h3>General Formulas and Concepts:</h3>

<u>Chemistry</u>

<u>Atomic Structure</u>

Reading a Periodic Table
Using Dimensional Analysis
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

<h3>Explanation:</h3>

<u>Step 1: Define</u>

2.68E24 atoms Mo or 2.68 × 10²⁴ atoms Mo

<u>Step 2: Identify Conversions</u>

Avogadro's Number

Molar Mass of Mo - 95.94 g/mol

<u>Step 3: Convert</u>

<u /> $2.68 \cdot 10^{24} \ atoms \ Mo(\frac{1 \ mol \ Mo}{6.022 \cdot 10^{23} \ atoms \ Mo} )(\frac{95.94 \ g \ Mo}{1 \ mol \ Mo} )$ = 426.966 g Mo

<u>Step 4: Check</u>

<em>We are given 3 sig figs. Follow sig fig rules and round.</em>

426.966 g Mo ≈ 427 g Mo

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3 years ago

What is meant by hydrogen bond

makvit [3.9K]

Answer:

The attraction between two atoms that already participate in other chemical bonds is a hydrogen bond

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3 years ago

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Which trait would most likely lead a scientist to repeat an experiment and verify the data?

Rama09 [41]

A scientist may repeat an experiment to make sure that results are reliable. An example would be if the test had a large variance in data gathered and no conclusions could be drawn.

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3 years ago