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Rufina [12.5K]
3 years ago
10

True or False: Gases have a definite shape and volume.

Chemistry
1 answer:
miskamm [114]3 years ago
3 0
1. False, gas does not have a shape to it 2. It decreases
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The reusable booster rockets of the U.S. space shuttle use a mixture of aluminum and ammonium perchlorate for fuel. A possible e
Klio2033 [76]

Answer:

0.2298kg of Al

Explanation:

From the equation of reaction

3 moles of Al (81g) is required to mix with 3 moles of NH4ClO4 (352.5g)

Mass of Al required in the fuel mixture for every kilogram (1000g) of NH4ClO4 = 1000×81/352.5 = 229.8g = 229.8/1000 = 0.2298kg

3 0
3 years ago
Milk has a density of 1.04 g/ml. If you have a volume of 510 ml, what is the mass in grams
Law Incorporation [45]

Density is defined as the ratio of mass and volume. The formula of density is:

density = \frac{mass}{volume}     -(1)

Density of milk = 1.04 g/mL   (given)

Volume of milk = 510 mL      (given)

Substituting the values in formula (1):

1.04 g/mL = \frac{mass}{510 mL}

mass= 1.04 g/mL \times 510 mL

mass = 530.4 g

Hence, the mass of the milk is 530.4 g.

4 0
3 years ago
Which of these combinations of elements from period 2 are placed in order of "weaker" pull to "stronger" pull? * TAKING QUIZ NOW
Kruka [31]
I think it is D
Hope this help you?!
7 0
3 years ago
Newton's Second Law of Motion is F = ma. Closely related to this is Hooke's Law, F = -kx, which describes the force needed to re
ss7ja [257]

Answer:

B

Explanation:

Hook's law describe the elasticity of something

3 0
3 years ago
A hypothetical element has two main isotopes. One has a mass of 54 amu and the other has a mass of 56 amu. If the atomic weight
castortr0y [4]

Answer:

The answer to your question is: letter D

Explanation:

Data

Isotope mass 1 = 54 amu

Isotope mass 2 = 56 amu

Atomic weight = 54.37 amu

Percent abundance of isotope 2 = ? = X

Percent abundance of isotope 1 = 1 - x

Formula

Atomic weight = (Mass isotope 1)(1 - x) + (mass isotope 2)(x)

Process

Place the data in the formula and solve for x.

54.37 = 54( 1 - x) + 56x

54.37 = 54 - 54x + 56x

54.37 - 54 = -54x + 56x

0.37 = 2x

x = 0.37 / 2

x = 0.185

To find the percent multiply by 100

x = 0.185 x 100

x = 18.5 % = Mass of isotope 2

Mass of isotope 1 = 100 - 18.5 = 81.5 %

8 0
4 years ago
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