How would the number of atoms in a 2.02g sample of hydrogen compare to the number of atoms in a 32.00g sample of oxygen

Answers

Answer 1

Answer:

Number of atoms is equal.

Explanation:

1 mol of anything contains NA particles.

NA is known as Avogadro's number, 6.02×10²³

We determined the moles of each compound. Both molecules are dyatomic,

H₂  → 2.02 g . 1mol / 2.016 g = 1 mol

O₂ →  32 g . 1mol / 32g = 1 mol

Both have the same amount of moles.

In conclussion, the number of atoms is the same in both samples.


Related Questions

Can u guys help me I have an f in science and this will help me a lot with my grade.

Answers

Answer:

First slide:

1) diffusion

2)water

3)high

4)low

5)balance

Second slide:

1)movement

2)without

3)energy

4)high

5)low

6)equilibrium

Final slide:

1)passive

2)energy

3)randomly

4)high

5)low

6)equilibruim

7)permeable

8)Osmosis

9)water

Hopes this helps! Good luck!

A man needs to lift a heavy box on the back of a truck or push up a ramp or lift it straight up from the ground to use around he won't have to move the box over a longer distance what did is the benefit of using a ramp to get the box

Answers

The benefits are with the aid of equipment work load is reduced therefore it is great to have as many aiding tool to assist on work

Convert 4.1x10^-4 moles of carbon into atoms.

Answers

Answer:

2.5×10^20atoms

Explanation:

number of moles= number of particles/Avogadro's constant

number of particles=Avogadro's constant × number of moles

number of particles=(6.02×10^23) × (4.1×10^-4)

number of particles=2.5×10^20

Which of these elements will successfully create a 1:1 bond with Carbon (C)
Carbon (C)
Silicon (Si)
Beryllium (Be)
Oxygen (0)

Answers

Answer:

Option B, Silicon

Explanation:

The valency of Carbon is 4 as it has four electrons in its outermost shell

The valency of Si is also four hence C

Hence Silicon can form 1:1 bond with the carbon

Valency of Beryllium is 2, hence it can not form 1:1 bond with carbon. Similarly the valency of oxygen and carbon are way different to form 1:1 bond

hence, only option B is correct

if 300.0g of chlorine is reacted how much calcium hydroxide is needed to react with it

Answers

Answer:

334.7g of Calcium Hydroxide are needed

Explanation:

Based on the reaction:

2Ca(OH)2 + 2Cl2 → Ca(ClO)2 + CaCl2 + 2H2O

2 moles of chlorine react with 2 moles of calcium hydroxide.

To solve this question we must find the moles of chlorine in 300.0g. These moles = Moles of Ca(OH)2. With the moles of calcium hydroxide we can find its mass as follows:

Moles Cl₂ (Molar mass: 70.90g/mol)

300.0g Cl₂ * (1mol / 70.90g) = 4.2313 moles Cl₂ = Moles Ca(OH)₂

Mass Ca(OH)₂ (Molar mass: 74.093g/mol)

4.2313 moles Ca(OH)₂ * (74.093g / mol) =

334.7g of Calcium Hydroxide are needed

is zinc an example of a element or compound?

Answers

Answer:

Zinc is an element.

Explanation:

Compounds are composed of two or more elements

Answer:

element

Explanation:

zinc is an element with atomic number 30

5. A sample of an unknown metal has a mass of 120.4 g. As the sample cools from 90.5°C to 25.7°C, it releases 7020. J of energy. What is the specific heat of the sample? Identify the metal among those in the data table below. Finally, is this endothermic or exothermic?

Answers

Answer: The specific heat capacity of the sample is [tex]0.899 J/g^{o}C[/tex] and as heat is released in this reaction so it is exothermic in nature.

Explanation:

Given: Mass = 120.4 g

Heat energy released = -7020 J

Initial temperature = [tex]90.5^{o}C[/tex]

Final temperature = [tex]25.7^{o}C[/tex]

 Formula used is as follows.

[tex]q = m \times C \times (T_{2} - T_{1})[/tex]

where,

q = heat energy

m = mass of substance

C = specific heat capacity

 [tex]T_{1}[/tex] = initial temperature

 [tex]T_{2}[/tex] = final temperature

Substitute the values into above formula as follows.

[tex]q = m \times C \times (T_{2} - T_{1})\\-7020 J = 120.4 g \times C \times (90.5 - 25.7)^{o}C\\C = \frac{-7020 J}{120.4 \times (-64.8^{o}C)}\\= \frac{7020 J}{7801.92} J/g^{o}C\\= 0.899 J/g^{o}C[/tex]

When heat is released in a process or reaction then it means it is exothermic in nature.

Thus, we can conclude that the specific heat capacity of the sample is [tex]0.899 J/g^{o}C[/tex] and as heat is released in this reaction so it is exothermic in nature.

A student uses visible spectrophotometry to determine the concentration of CoCl2(aq) in a sample solution. First the student prepares a set of CoCl2(aq) solutions of known concentration. Then the student uses a spectrophotometer to determine the absorbance of each of the standard solutions at a wavelength of 510nm and constructs a standard curve. Finally, the student determines the absorbance of the sample of unknown concentration. The original solution used to make the solutions for the standard curve was prepared by dissolving 2.60g of CoCl2 (molar mass 130.g/mol) in enough water to make 100.mL of solution. What is the molar concentration of the solution

Answers

Answer:

0.200 M

Explanation:

Step 1: Given data

Mass of CoCl₂ (m): 2.60 gMolar mass of CoCl₂ (M): 130. g/molVolume of solution (V): 100. mL (0.100 L)

Step 2: Calculate the moles (n) of CoCl₂ (solute)

We will use the following expression.

n = m / M

n = 2.60 g / (130. g/mol) = 0.0200 mol

Step 3: Calculate the molar concentration of the solution

Molarity is equal to the moles of solute divided by the liters of solution.

M = n/V

M = 0.0200 mol/0.100 L = 0.200 M

What are the 3 most valuable metals in the United States? A. Lead b. Gold c. Iron d.Copper e.Coal f.Silver g.Titanium

Answers

Answer:

Gold, Silver and Titanium

Explanation:

The most valuable metals in the list are:

Gold:

Its value makes it a good investment option. Gold can be used in many different ways, like in jewelry, electronics, medicine, etc.

Silver:

Similar to the case of gold, besides the common value of silver in jewelry, it can be also used in other ways, because it has a large thermal and electrical conductivity.

Finally, the titanium: It's price is actually close to the copper one, but for the cost of work with titanium (Titanium has a really large melting point, then melting it into ingots needs a lot of energy), the price of titanium is increased.

What is the molality of a solution in which 0.32 moles aluminum chloride has been dissolved in 2,200 g water

Answers

The molality is 0.145 molal

what does molecule mean?
a.) A pure substance, only one type of atom
b.) Two or more atoms held together by chemical bonds
c.)Composed of two or more separate elements
d.)The smallest part of matter still retaining chemical properties

Answers

A pure substance, only one type of atom

Answer:

(a) a pure substance, only one type of atom

Describe one way in which advances in space technology have improved our understanding of objects in space.

Answers

Answer:

Technology helps us in many ways.

Explanation:

We can now research the world even more effectively and at a higher level of sophistication thanks to technological advancements. Telescopes, on the other hand, enable us to peer into the far corners of the universe and detect very large objects such as stars. Electron microscope enable us to see smaller objects such as cells and organisms.

3. a. How many moles of NaCl are dissolved in 152 mL of a solution if the concentration of the solution is 0.364 M?

Answers

Answer:

Good luck man

Explanation:

Good luck man

A substance has a boiling point of 78 °C. Which of the following is true about the substance? (5 points) a It will also change from a gas to a solid at 78 °C while the gas loses energy. b It will also change from a gas to a solid at 78 °C while the gas gains energy. c It will also change from a gas to a liquid at 78 °C while the gas loses energy. d It will also change from a gas to a liquid at 78 °C while the gas gains energy.

Answers

Answer: If a substance has a boiling point of [tex]78^{o}C[/tex] then it is true that it will also change from a gas to a liquid at 78 °C while the gas loses energy.

Explanation:

The temperature at which vapor pressure of a liquid substance becomes equal to the atmospheric pressure is called boiling point of substance.

At the boiling point, liquid phase and vapor phase remains in equilibrium.

This means that as liquid phase changes into vapor phase and also vapor phase changes into liquid phase at the boiling point.

Thus, we can conclude that if a substance has a boiling point of [tex]78^{o}C[/tex] then it is true that it will also change from a gas to a liquid at 78 °C while the gas loses energy.

during prophase a group of fibers called what forms the cell

Answers

Answer:

During prophase, the nucleus disappears, spindle fibers form, and DNA condenses into chromosomes ( sister chromatids ). During metaphase, the sister chromatids align along the equator of the cell by attaching their centromeres to the spindle fibers.

Explanation:

Ayy, have you seen the state of her body? (Mad)
If I beat it, I ain't wearin' a johnny (Hah)
Adeola wanna roll with a geezer (With a geez)
Is it me or the lifestyle, sweetheart?
Actually, I don't give a shi (Nah)
I'm a rapper now, might as well live in it (Live in it)

Which of these elements will successfully create a 1:1 bond with Boron (B)
Phosphorus (P)
Helium (He)
Nitrogen (N)
Aluminum (AI)

Answers

Answer:

Option D, Aluminum

Explanation:

Valency of boron and hence it requires three electron to complete its outermost shell.

Valency of Aluminum is also three and it can donate three electrons to boron to complete the outermost shell of itself as well as the boron.

Hence, Aluminum and Boron will form 1:1 bond with each other. (Al-B)

Hence, option D is correct

Write out a “for every” statement that relates the amount of methane to the amount of oxygen gas (CH4 + 2O2 = CO2 + 2H2O)

Answers

Answer:

For every one molecule of methane, one molecule of oxygen is required to release one molecule of CO2 and 2 molecule of H2O

Explanation:

As we can in the balanced equation below -

CH4 + 2O2 = CO2 + 2H2O

One molecule of CH4 reacts with two molecule of oxygen to release one molecule of CO2 and 2 molecule of H2O.

Hence, it can be said

For every one molecule of methane, one molecule of oxygen is required to release one molecule of CO2 and 2 molecule of H2O

How does competition among different species lead to extinction?

Answers

[tex]\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:}}}}}[/tex]

Interspecific competition often leads to extinction. The species that is less well adapted may get fewer of the resources that both species need. As a result, members of that species are less likely to survive, and the species may go extinct.

Thanks Hope it helps.

PLESE HELP WILL GIVE BRAINLYESTY
Imagine that you are Sir Isaac Newton. Write a short autobiographical statement that talks about who you are, where you’re from, and some of your important contributions.

Answers

Answer:

My name is Isaac Newton  and I am a scientist. I am known as one of the most important scientists in history. I was born in Woolsthorpe, England on January 4, 1643. My father, a farmer who was also named Isaac Newton, had died three months before my birth. My mother remarried when I was three years old and left me in the care of my grandparents.

Explanation:

I can't do Miscellaneous calculations!

E.g.
How many moles of oxygen atoms are present in 2.5 mole of water molecules?

Answers

So just balance the eqn and take the numbers infront of it
take the unknown (the one that the qn is asking for) and ratio it with the known variable
and then put in the mol that you know for the known variable and just do math to get the answer for the unknown

What is the main factor that controls the type of volcano that forms
following eruption?

Answers

Answer:

the buoyancy of the magma, the pressure from the exsolved gases in the magma and the injection of a new batch of magma into an already filled magma chamber

The buoyancy of the magma is the main factor that controls the type of volcano that forms following eruption.

What is volcano?

A volcano is a crack in the crust of the Earth, another planet, or a satellite from which molten rock, hot stone pieces, and hot gases are released in eruptions. An amazing demonstration of Earth's might is a volcanic eruption.

Eruptions may cause catastrophic loss of lives and property, particularly in areas of the planet that are highly inhabited, despite the fact that they are beautiful to observe. The buoyancy of the magma is the main factor that controls the type of volcano that forms following eruption.

Therefore,  the buoyancy of the magma is the main factor that controls the type of volcano that forms following eruption.

To know more about volcano, here:

https://brainly.com/question/14400711

#SPJ6

1) Draw a particle picture of liquid lemonade turning into a solid popsicle
BEFORE
AFTER

Answers

Explanation:

The particles are further apart in liquids than in solids so when the lemonade changes from a liquid to a solid, the particles would become closer.

why do different people have differently shaped proteins?

Answers

The sequence of amino acids in the chain determines how the chain will fold up to make the protein, so different proteins have different three-dimensional shapes. ... This is because proteins form attachments and interact with many other molecules and structures inside organisms.

Why are infants and children often more susceptible to the effects of toxic substances than adult? (Explain)

Answers

From what I know personally from learning about this type of subject in the past is that children are more susceptible to the effects of toxic substances more than adults are, certain scientific data specifically indicate that children actually are for all intents and purposes more basically susceptible to toxic exposure than adults because they for the most part have proportionally definitely more intake of food contaminants, basically active developmental processes, basically multiple exposure pathways and really susceptible kind of socio-behavioral activities in a particularly major way.

WILL GIVE BRAINLIEST!!

What adaptation helps the pelican to swim?
Big wings
Long beak
Strong legs
Webbed feet

Answers

webbed feet!!!!!!!!!!!!
It is long beak and big wings

2.3g of lithium chloride in 500cm3 of solution

Answers

Answer:

0.109M

Explanation:

Find molarity of the solution:

Molarity is defined as the ratio between the moles of the solute (Lithium Chloride in this case) per liter of solution. To solve this question we have to find the moles of LiCl and its volume as follows:

Moles LiCl -Molar mass: 42.394g/mol-

2.3g * (1mol / 42.394g) = 0.0543 moles

Volume in liters:

500cm³ * (1L / 1000cm³) = 0.500L

Molarity:

0.0543 moles / 0.500L =

0.109M

a railroad car with a mass of 90,000 kg is traveling along a straight, horizontal track at a constant speed of 2 m/s. the car collides with a second railroad car, also with a of 90,000 kg that is initially at rest. The railroad cars stick together after the collision, as shown in the figure.

1) 0.5 m/s
2) 1 m/s
3) 2 m/s

Answers

Answer:

I think it's 2.

Explanation:

The weight should transfer half of it's velocity to the other one. or its 1

To objects (A and B) of the same temperature are in contact with each other? Which statement is true.

A. Heat transfers from object A to object B, because molecules from a collide with those from B.
B. No heat transfers because there are no collisions between the molecules of the objects
C. Heat transfers from object B to object A, because molecules from B collide with those from A
D. Although the molecules collide, no heat transfers because there is no temperature difference between the objects

Answers

Que pa’so thosui? Esta bious classa?
Answer is a heat transfers from object a

Explain what happens when there is a lot of extra greenhouse gases in our atmosphere. Explain what happens when there's not enough greenhouse gases in our atmosphere. Based on those answers, are greenhouse gases inherently good or bad? Explain.

Answers

Explanation:

Here is why: If the atmosphere contains too much of these gases, the whole Earth becomes a hotter and hotter greenhouse. The atmosphere holds onto too much of the heat at night instead of letting it escape into space. Then, the next day, the Sun heats Earth's surface even more.

In order to tell the difference between microwaves and visible light in the blue range, which of the following measurements should be made?

Answers

Answer:

microwaves should be made

Answer:

answer choices plzzzzz

ima edit my answer wht are the choices

Explanation:

mrk mE BRAINLIEST PLZZZZZZZZZZZz

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