please I need help please thanks you

Answer:

Astronomers use a number of telescopes sensitive to different parts of the electromagnetic spectrum to study objects in space. Even though all light is fundamentally the same thing, the way that astronomers observe light depends on the portion of the spectrum they wish to study.

Explanation:

Answer: c2h2o

Explanation:

Answer:

If you're asking for the mass (grams)

then 739.21 g

Explanation:

No. of mols = mass/molar mass

Mass= Molar mass x No. of mols

Mass= 101.96 g/mol x 7.25 mols

Mass= 739.21 g

Answer:

Compound

Explanation:

An element is just like Carbon by itself but when theres more than one element it is a compound.

Answer:

C2H3O is a compound as it is formed when three elementscarbon, hydrogen, oxygen) react together

Answer:

I would say proton and electron are the two most important subatomic particles in an atom

Explanation:

The number of protons inside a nucleus must equal to the number of electrons outside of the nucleus. This number determines all the chemical properties of the atom, which governs the behaviors of all matters in our world.

Answer:

I would say proton and electron are the two most important subatomic particles in an atom. The number of protons inside a nucleus must equal to the number of electrons outside of the nucleus. This number determines all the chemical properties of the atom, which governs the behaviors of all matters in our world.

Explanation:

In the 23rd century, the mass ratio of H:S:O in sulfuric acid will remain 1:8:32.

We know from the law of definite proportions that irrespective of the path through which a chemical compound is obtained, it has a fixed composition by mass.

As such, the composition of a chemical substance does not vary. Therefore, in the 23rd century, the mass ratio of H:S:O in sulfuric acid will remain 1:8:32.

Learn more about law of definite proportions:https://brainly.com/question/13204929

Answer:

the answer is not d because you can pee without moving. so its a because without the food nutrient no part of our body can work

Answer:

El rendimiento seria mayor ya que la potencia aumenta.

Explanation:

La potencia aumenta cuando determinado trabajo se realiza en menor cantidad de tiempo.

Answer:

where is the question i can't see it

Answer:

0.40m

Explanation:

Answer:

Is there any answer options?, if not the answer is V2= 43.6m3

"The volume of the gas is calculated Boyles law. If 36.5 m of a gas are collected at a pressure of 755 mm Hg, then the volume of the gas will be 43.6 [tex]m^{3}[/tex]"

What is Boyles Law?

Boyle's law, also known as the Boyle–Mariotte law or Mariotte's law, would be an experimental gas law that specifies that how pressure of a gas decreases as the container capacity increases.

It can be represented by the formula:

[tex][P_{1} V_{1} =P_{2} V_{2}[/tex]

It is given that, [tex]P_{1}[/tex]= 755 mmHg, [tex]P_{2}[/tex] = 632 mm Hg, [tex]V_{1}[/tex]= 36.5[tex]m^{3}[/tex]. [tex]V_{2}[/tex]= ?

Now, put the value of given data in above formula:

[tex]V_{2}[/tex] = 755× 36.5/632= 43.6 [tex]m^{3}[/tex] .

To know more about Boyles law click here.

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Answer:

3. They allow us to take energy from natural processes

Explanation:

There are two major sources of energy namely: renewable and non-renewable. Renewable sources of energy are those natural sources that gets replenished faster than they are utilized, which is contrary to non-renewable sources. Examples of renewable sources of energy are wind energy, solar energy, hydro (water) energy.

According to the question, one advantage or merit that renewable sources have over their counterparts is that they allow us to take energy from natural processes e.g. wind, sunlight etc.

Answer:

negative attraction

Explanation:

because a copper ion looses electrons, meaning it's negatively charged, and positives and negatives attract.

Answer:

A

Explanation:

'herd behavior' helps understand the question for the answer

Answer:

A. Adults keep the young musk oxen warm.

Explanation:

Answer:

a double helix structure

Explanation:

a two-stranded molecule that appears twisted, giving it a unique shape referred to most commonly as the double helix structure

For the Question "Which of the following represents a covalent compound?" we have

From the Question we are told

'3. c

Generally

a covalent compound is a kind of bond in which valence electrons are shared b/w the party atoms forming the bond

Therefore

We see covalent compound in CO_2 as they match perfectly the phenomenon that is covalent bonding

Therefore

For the Question "Which of the following represents a covalent compound?" we have

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Answer:

The volume is 77 L.

Explanation:

where P is pressure, V is volume, n is moles, R is the gas constant, and T is temperature in Kelvins.

The current STP temperature is 0∘C or 273.15 K (used for gas laws), and the pressure is 105Pa, which most people write as 100 kPa (both pressures are equal).

Answer:

Fluorine:non-metal

Bromine:non-metal

Hydrogen:non-metal

Beryllium:metal

Nitrogen:non-metal

Answer:

C is the correct answer

I hope this helps you:)

Explanation:

C slower, and the substance will be a liquid

Answer:

NaOH+HF-------NaF+H2O

1 mole Of HF=1mole of NaF

3mole HF= X

X=3mole of NaF

Answer:

as a verb it means make a serious or urgent request, typically to the public.

"police are appealing for information about the incident"

as a noun it means a serious or urgent request, typically one made to the public.

"his mother made an appeal for the return of the ring"

Explanation:

hope it helps

Answer:

db gb bg    

Explanation:

Answer:

15 g of CaCo₃

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

CaO + CO₂ —> CaCo₃

From the balanced equation above,

1 mole of CaO reacted to produce 1 mole of CaCo₃.

Next, we shall determine the number of mole of CaCo₃ produced by the reaction of 0.15 mole of CaO. This can be obtained as follow:

From the balanced equation above,

1 mole of CaO reacted to produce 1 mole of CaCo₃.

Therefore, 0.15 mole of CaO will also react to produce 0.15 mole of CaCo₃.

Finally, we shall determine the mass of 0.15 mole of CaCo₃. This can be obtained as follow:

Mole of CaCo₃ = 0.15 mole

Molar mass of CaCo₃ = 40 + 12 + (16×3)

= 40 + 12 + 48

= 100 g/mol

Mass of CaCo₃ =?

Mole = mass / Molar mass

0.15 = Mass of CaCo₃ / 100

Cross multiply

Mass of CaCo₃ = 0.15 × 100

Mass of CaCo₃ = 15 g

Thus, 15 g of CaCo₃ were obtained from the reaction.

I believe it's better for it to be more abundant because it's better to have more then less. Take water as an example. Water is an important factor to our survival and if we didn't have enough of that we would be in trouble.  Or if we needed food but there wasn't enough more people would be dying from starvation. It's better to have a little more than a little less.

Answer:

1.3 moles/ 1.33150727 moles

Explanation:

350g x 1 mol/262.86g = 1.3 moles

The molar mass of Mg3(PO4)2 is 262.855 g/mol

Atomic weight of the parts:

Mg 24.3050   x 3 = 72.92

P 30.973762   x2 = 61.95

O 15.9994   x8 = 127.995

There are 262.855 grams in one mole, so  

350.00 g x (262.855g/1 mole) = 1.33 moles Mg3(PO4)2