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4 years ago

Which statement explains why large atoms are more reactive than small atoms?

1 answer:

3 0

<>"A. Large atoms have valence electrons farther from the nucleus and lose them more readily, so they are more reactive than small atoms. In contrast, the valence electron of a large atom like Cs is so loosely held that cesium explodes on contact with water."<>

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A cell contains the same DNA as its parent cell. This is a result of which process? mitosis meiosis gamete formation fertilizati

lesya692 [45]

Answer:

Mitosis

Explanation:

A cell that contains the same DNA as its parent cell is a product of mitosis.

Mitosis is a cell division process that takes place in somatic cells.
In meiosis a single cell divides to produce two daughter cells each having the same DNA as the parent
Mitosis ensures that the same DNA is found between the parent
Mitosis is used for repairing and production of new cells.

3 0

3 years ago

Read 2 more answers

Anouk does 150 J of work using a hammer to pull a nail out of a piece of wood, and the hammer does 105 J of work on the nail. Wh

astraxan [27]

The efficiency of any machine is given by:

efficiency = output obtained / input given

Substituting the values,
Efficiency = 105 / 150
Efficiency = 0.7

Converting this to a percentage, the efficiency of the hammer is 70%.
This is a fairly high efficiency, and this is due to the fact that the hammer is a simpler machine. The more complex a machine is, the greater are the losses in it due to friction, meaning there is a lower efficiency.

6 0

4 years ago

Read 2 more answers

Which element cannot be the central atom of a lewis structure?.

zalisa [80]

Answer:

Hydrogen

Explanation:

Hydrogen can never be central atom despite its low electronegativity

5 0

2 years ago

18. What is the percent by mass sugar of a solution made by dissolving 12.45 grams of sugar in 100 grams of water?

Fantom [35]

The percent by mass sugar of a solution : 11.07%

<h3>Further explanation</h3>

Given

mass of sugar = 12.45 g

mass of water = 100 g

Required

The percent by mass

Solution

Mass of solution :

$\tt mass~sugar+mass~water=12.45+100=112.45~g$

Percent mass of sugar :

$\tt \%mass=\dfrac{mass~sugar}{mass~solution}\times 100\%\\\\\%mass=\dfrac{12.45}{112.45}\times 100\%=11.07\%$

6 0

3 years ago

HELP ME PLEASE (brainliest)

Aloiza [94]

Answer: i would say D or the last one.

Explanation: According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants. The law of conservation of mass is useful for a number of calculations and can be used to solve for unknown masses, such the amount of gas consumed or produced during a reaction.

Hope this helps :) Can u plz mark me branliest

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3 years ago