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zloy xaker [14]
3 years ago
6

An object has a mass of 48g and it has a height of 5cm, a width of 2cm and a length of 5cm.

Chemistry
1 answer:
Ainat [17]3 years ago
3 0

Answer:

0.96g/cm³

Explanation:

Given parameters:

Mass of the object  = 48g

Height of the object  = 5cm

Width of the object  = 2cm

Length of the object = 5cm

Unknown:

Density = ?

Solution:

Density of a body is the mass per unit volume of the body.

  Mass is the amount of matter in a substance

  Volume is the space such a body occupies

To find the volume;

     Volume  = l x w x h

 Insert the parameters and solve;

    Volume = 5cm x 2cm x 5cm = 50cm³

  Density  = \frac{mass}{volume}

Density = \frac{48 }{50}   = 0.96g/cm³

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2 years ago
An 8 oz. bottle of energy drink contains 6.0 g of protein, 2.0 g of fat, and 16.3 g of carbohydrate. The fuel value of this ener
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<u>Answer:</u> The correct option is d) 460 kJ

<u>Explanation:</u>

We are given:

Content of fat in energy drink = 2.0 g

Content of protein in energy drink = 6.0 g

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Also,

The fuel value of fat = 38 kJ/g

The fuel value of protein = 17 kJ/g

The fuel value of carbohydrate = 17 kJ/g

So, the fuel value of the energy drink will be:

Total fuel value = (2.0g\times 38 kJ/g)+(6.0g\times 17 kJ/g)+(16.3g\times 17 kJ/g)

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4 0
3 years ago
If a straight-chain hydrocarbon is a gas at room temperature, how many carbon atoms will it have?
Orlov [11]

The fewer the carbon atoms, the closer it is  to being a gas. The only one you have to check out is A which is hexane. You know that gasoline at the pumps has 8 carbons and its a liquid. So B and C are both not gases  because they are above 8.

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6 0
3 years ago
Propanoic acid (propionic acid) has the formula CH3CH2COOH. Draw the conjugate base, that is, the structure that results from de
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Answer:

Conjugate base: Propionate

Explanation:

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  • Propionic acid deprotonates to produce it's strong conjugate base propionate.
  • In propionic acid, -OH group in -COOH functional moiety dissociates to produce H^{+}. Because the O-H bond electrons remains highly polarized towards oxygen atom due to electron withdrawing inductive effect as well as resonating effect of -COOH moiety.
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How many grams of potassium nitrate (KNO3) are required to prepare 0.250L of a 0.700 M
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Answer:

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