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3 years ago

What is accretion?????

Chemistry

2 answers:

Monica [59]3 years ago

8 0

Answer:

the process of growth or increase, typically by the gradual accumulation of additional layers or matter.

Explanation:

nasty-shy [4]3 years ago

4 0

Answer:

The process of growth or increase, typically by the gradual accumulation of additional layers or matter.

Explanation:

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What human development period 2 years and 12 years called

nikdorinn [45]

Answer:

In these lessons, students become familiar with the four key periods of growth and human development: infancy (birth to 2 years old), early childhood (3 to 8 years old), middle childhood (9 to 11 years old), and adolescence (12 to 18 years old).

7 0

3 years ago

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What happens to electrons in an ionic bond?

ElenaW [278]

Answer:

the metal loses electrons to become a positively charged cation

Explanation:

4 0

2 years ago

The vapor pressure of pure pentane and pure hexane are 425 torr and 151 torr respectively. equal moles of pentane and hexane are

nadezda [96]

The mole fraction of pentane in the vapor is 0.291

Vapour pressure rises with temperature and is a measurement of a substance's propensity to transform into a gaseous or vapour state. The boiling point of a liquid is the temperature at which the pressure exerted by its surroundings equals the vapour pressure present at the liquid's surface.

The number of moles of a particular component in the solution divided by the overall number of moles in the sample solution is known as the mole fraction.

Using the formula for vapour pressure,

vapour pressure = $P^{}$ ° $_{hex}$ × $X_{hex}$ + $P^{}$ ° $_{pen}$ × $X_{pen}$

vapour pressure = 151 × $(1-$ $X_{pen}$ $)$ + 425 × $X_{pen}$

240 = 151 - 151 $X_{pen}$ + 425 $X_{pen}$

240 - 151 = - 151 $X_{pen}$ + 425 $X_{pen}$

89 = 274 $X_{pen}$

$\frac{89}{274}$ = $X_{pen}$

0.291 = $X_{pen}$

Therefore, the mole fraction of pentane in the vapor is 0.291

Learn more about vapour pressure here;

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3 0

1 year ago

Study the solutions in the glasses. Put the solutions in order from concentrated to dilute.

BaLLatris [955]

I thank it is b the correct answer

4 0

3 years ago

What volume does 8.5 g NH₃ occupy at STP?

vesna_86 [32]

First, convert grams to moles by dividing 8.5 by the molar mass of NH₃ (N=14,H=1)
14+1+1+1=17
8.5/17=.5 moles NH₃
Multiply .5 by the conversion factor of moles to L (22.4)
.5*22.4=11.2 L NH₃
11.2 is just 11.21 rounded down, so your answer is C) 11.21 L

5 0

2 years ago