Choose the answer that best describes the order of the life cycle of a large star.

Answer:

If I think this is the same question then the answer is "scientists still debate this"

Explanation: First of all I just took the test. and second light can be both a particle and a wave because of quantum mechanics, I believe einstein came up with the idea.

Organisms that reproduce sexually have offspring with greater variety because: B. The offspring get DNA from two parents, and it combines randomly.

Reproduction refers to a biological process through which living organisms (parents) mate to produce offspring.

Basically, there are two (2) main types of reproduction and these include;

During sexual reproduction, parent organisms produce offspring with greater variety because the genetic material of their parents are randomly combined to produce genetically-diverse offspring.

Read more: https://brainly.com/question/24261254

Organisms that reproduce sexually have offspring with greater variety as a

result of offspring get DNA from two parents, and it combines randomly.

The DNA gotten from the daughter cells during meiosis involves the

production of unique cells from the parent cells

This is usually done by the daughter cells obtaining  DNA from both parent

and combining randomly. It doesn't mutate regularly as mutation represents

defects which occurs in cells.

Read more on https://brainly.com/question/25411481

Answer: Catalyst

Explanation: it speeds it up lol but basically the catalyst helps speed up the chemical reaction by reducing the activation energy or changing the reaction machenism/

Answer:

The answer is A. Catalyst

Answer:

Kinetic

Explanation:

Kinetic energy is the energy of motion.

Answer:

kinetic energy because of its motion

Human devices use potential energy to store energy, whereas kinetic energy is potential energy in motion. Both types of energies can be measured in Joules (J).

Human devices generate and use different sources of energy, which can be classified into renewable sources (e.g., solar, hydraulic, winds, etc) and non-renewable sources (e.g., nuclear energy) of energy.

For example, a hydroelectric power plant transforms the potential energy stored in water reservoirs (e.g., a lake) into mechanical energy (a type of kinetic energy) when this energy is released from the water reservoir and flows through a turbine.

Subsequently, this type of kinetic energy is then used to generate electricity.

On the other hand, a nuclear power plant uses the potential energy that is stored within the nuclei of atoms to produce kinetic energy by a process known as nuclear fission.

This process (nuclear fission) releases energy in the form of heat (i.e., thermal energy).

Subsequently, this type of kinetic energy (heat) is used to generate steam, which then moves turbines to generate mechanical energy and finally generates electricity.

Learn more in:

https://brainly.com/question/4038933

Answer:

Electron shells surrounding the nucleus.

Answer:

3rd option

Explanation:

Answer:

one electron

Group 1A elements are the alkali metals and all have one electron in the outermost energy level because their electron configuration ends in s1.

Explanation:

Answer:

1 electron

Explanation:

they are reactive becasue they only have one electron.

Answer:

V = volume, usually in Litres

n = number of moles, in mol

R = the gas constant, which should be 8.33 J*K /mol

T = is the temperature, but in kelvin (if its in Celcius, you convert it)

Answer:

you will run 720 meters

Explanation:

because 4 times 60 is 240 and 240 times 3 is 720

Answer:group 4 and 5

Explanation: it is because they are the smallest class of elements containing only 6 elements

Answer:

using liquid carbon dioxide to produce oils or other forms.

Explanation:

Answer:

she could be lying about liking you or just want to be friends just ask

Solubility refers to the ability of substances to dissolve in a solvent. Of the gases listed here, that which would most likely dissolve in water is;

Carbon dioxide is a gas that has a very high solubility in water. When bubbled through water, 99% of the gas dissolves while 1% of the gas comes off as carbonic acid.

The solubility of carbon dioxide increases with an increase in pressure and decreases with an increase in temperature.

Therefore, option A is correct.

Learn more here:

https://brainly.com/question/24332155

Answer:

Explanation:

Why are compounds, such as NaCl, more stable than the elements that make them up?

the driving force for chemical reaction is that elements and compounds wil react until they produce more stable matter,

Na metal and Cl2 are very reactive.   When they react with each other they become more stable as the Na+ and Cl− ions

Answer:

false

Explanation:

I think it would help you out

Answer:

83.82 g of magnesium ions.

Explanation:

We want to determine the mass of magnesium ions in 155.0 grams of magnesium phosphide (Mg₃P₂).

We can convert from grams of Mg₃P₂ to moles of Mg₃P₂, moles of Mg₃P₂ to moles of Mg, and moles of Mg to grams of Mg.

Find the molecular weight (molar mass) of magnesium phosphide:

[tex]\displaystyle \begin{aligned}\text{MW}_\text{Mg$_3$P$_2$} &= \left(3(24.31)+2(30.97)\right) \text{ g/mol} \\ \\ &= (72.93 + 61.94) \text{ g/mol} \\ \\ &= 134.87 \text{ g/mol}\end{aligned}[/tex]

The molecular weight of magnesium is 24.31 g/mol*.

From the chemical formula, we can see that there are three moles of magnesium for every one mole of magnesium phosphide.

Hence, multiply initial amount with known ratios:

[tex]\displaystyle \begin{aligned} &155.0 \text{ g Mg$_3$P$_2$} \cdot \frac{1 \text{ mol Mg$_3$P$_2$}}{134.87\text{ g/mol}} \cdot \frac{3\text{ mol [Mg$^{2+}$]}}{1 \text{ mol Mg$_3$P$_2$}}\cdot \frac{24.31 \text{ g [Mg$^{2+}$]}}{1 \text{ mol [Mg$^{2+}$]}}\\ \\ & = 83.82 \text{ g [Mg$^{2+}$]}\end{aligned}[/tex]

In conclusion, there are 83.82 grams of magnesium ions in 155.0 grams of magnesium phosphide.

*Because the magnesium ions in magnesium phosphide have two less electrons, its molecular weight will indeed be lower. However, due to the extremely small size of an electron (1/2000th of a proton), the difference in mass is insignificant.

Answer:

Arcuate: A fan-shaped delta, bowed or curved.

Cuspate: V-shaped delta.

Bird-foot: Outstretched claws delta

Inverted: The narrow end of delta, or river delta.

Waves: Large or regular shaped waves delta.

Tires: Round shaped delta

River estuary: A landform deposited by sediment

Explanation:

Answer:

0.40mol

Explanation:

M = n/V

n= VM

500mL is 0.5L

n = (0.5)(0.80)

n = 0.40mol

Answer:

Electron bonds break and reattach to other atoms

Explanation:

Most chemical reactions involve the breaking of bonds

Answer:

22.6666666666666666 and so on

Explanation:

68÷3

Answer:

The right answer 22.6666666667

Explanation:

68÷3 the right one

Answer:

The answer is option b.

Explanation:

Amplitude is the distance apart each wave is.

The major product is 3-methyl-2-pentene and the minor product is 2-ethyl-1-butene.

The alkyl halide shown is 3-bromo-3-methyl pentane. We can see that it is a tertiary alkyl halide. The proportion of products formed during the reaction are determined by Markovnikov rule.

The two products of this reaction are; 3-methyl-2-pentene and 2-ethyl-1-butene. The major product is 3-methyl-2-pentene because it is formed from a more stable carbocation intermediate.  2-ethyl-1-butene is the minor product.

Learn more: https://brainly.com/question/20339399

Answer:

d

Since there are 6 electrons and it's neutral, that means there are also 6 protons to balance it out. They said there's 6 neutrons. The atomic mass is the total of protons and neutrons so 6+6=12

Answer:

it boils a liquid to create condomsation

Explanation:

Answer:

Distillation refers to the selective boiling and subsequent condensation of a component in a liquid mixture. It is a separation technique that can be used to either increase the concentration of a particular component in the mixture or to obtain (almost) pure components from the mixture. The process of distillation exploits the difference in the boiling points of the components in the liquid mixture by forcing one of them into a gaseous state.

Explanation:

Answer:

Explanation:

Answer:

1.2044 × 10²⁴

Explanation:

1 mol = 6.022 × 10²³

2 mol = 2 × 6.022