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amid [387]
3 years ago
5

Which of the following describes a reference point?

Chemistry
1 answer:
Vitek1552 [10]3 years ago
5 0

Answer:

A

Explanation:

i think the answer is A

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A material has a volume of 63.0 cm3 and a mass of 28 grams.  What is the density of the material in g/cm3 to the correct number
dimaraw [331]

Answer:

0.4444 g/cm³ ≅ 0.44 g/cm³ (2 significant figures).

Explanation:

  • Knowing that:

<em>d = m/V,</em>

where, d is the density of the material (g/cm³).

m is the mass of the material (m = 28 g).

V is the volume of the material (V = 63.0 cm³).

<em>∴ d = m/V </em>= (28 g)/(63.0 cm³) = <em>0.4444 g/cm³ ≅ 0.44 g/cm³ (2 significant figures).</em>

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Why might changes to an environment cause an organism’s population to decrease?
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When a -COOH group replaces a hydrogen in a hydrocarbon the result is a/an
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What is the density of an object with a mass of 16 g and 3.0 ml
fomenos

Answer:

D = 5.3 g/mL

Explanation:

Density = Mass over Volume

D = m/V

Step 1: Define

D = unknown

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v = 3.0 mL

Step 2: Substitute and Evaluate

D = 16 g / 3.0 mL

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Step 3: Simplify

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5.333333333 g/mL ≈ 5.3 g/mL

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Determine the number of moles in 497 grams of the
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