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3 years ago

Predict the shape of the molecule around the

Chemistry

1 answer:

QveST [7]3 years ago

4 0

It can’t be linear or tetrahedral it’s either trogons planar or bent and trogons has the word tri which stands for three so that’s not the answer the answer is bent and through process of elimination I did this thank you from me

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What is the mass of a metal block with a volume of 3.1cm3 and a density of 3.82 g/cm3

zepelin [54]

Answer:

11.842g

Explanation:

To find mass the formula is volume times density.

4 0

4 years ago

Compounds like CCl₂F₂ are known as chlorofluorocarbons, or CFCs. These compounds were once widely used as refrigerants but are n

Nataliya [291]

Explanation:

The given data is as follows.

Specific heat of water = $4.18 J/g^{o}C$

Heat of fusion of water = 334 J/g

Mass of water = 200 g

On bringing water at $0^{o}C$ , heat released will be as follows.

$q_{1} = m \times C \times \Delta T$

= $200 g \times 4.18 J/g^{o}C \times (0 - 15)^{o}C$

= -12540 J

or, = -12.540 kJ (as 1 kJ = 1000 J)

Now, calculate the heat releasedwhen water freezes at $0^{o}C$ as follows.

$q_{2} = mass \times \text{-heat of fusion}$

= $200 g \times -334 J/g$

= -66800 J

or, = -66.80 kJ

Therefore, total heat released in freezing water will be as follows.

$q_{total} = q_{1} + q_{2}$

= (-12.540 - 66.80) kJ

= -79.34 kJ

Hence,

amount of heat released in freezing water = heat used to vaporize $CCl_{2}F_{2}$

Now, heat of vaporization of $CCl_{2}F_{2}$ = 289 J/g

Total heat released in freezing water = -79.34 kJ

Heat consumed to vaporize $CCl_{2}F_{2}$ = 79.34 kJ = -79340 J

Therefore, calculate the mass of $CCl_{2}F_{2}$ vaporized as follows.

Mass of $CCl_{2}F_{2}$ vaporized = $\frac{\text{heat consumed}}{\text{heat of vaporization}}$

= $\frac{79340 J}{289 J/g}$

= 274.53 g

Thus, we can conclude that 274.53 g mass of this substance must evaporate to freeze 200 g of water initially at $15^{o}C$ .

5 0

4 years ago

analyze why is the result of the stage of meiosis shown below an advantage for organisms that reproduce sexually.

patriot [66]

Answer:

Meiosis produces haploid cells (gametes), which contain single chromosomes, or on-half the number of chromosomes in diploid cells. When a sperm and an egg join, the single chromosomes pair up, which results in genetic diversity in the offspring

6 0

3 years ago

The three most common states of matter on Earth are solids,blank

Nostrana [21]

Answer:

<h3>example:</h3><h3>meaning of the blank you need to do complete the words</h3>

Explanation:

<h2>#CarryOnLearning</h2>

7 0

3 years ago

A binding protein binds to a ligand l with a kd of 400 nm. what is the concentration of ligand when y is (a) 0.25, (b) 0.6, (c)

lilavasa [31]

Hey there!:

The fractional saturation y is defined as :

y = [ L ] / Kd + [ L ]

where :

[ L ] = concentration of binding ligand

Kd = 400 nm

3 0

4 years ago