Answer:
53.18 grams of H₂SO₄ are needed to react with 78.86 grams of Al(NO₃)₃.
Explanation:
The balanced reaction between Al(NO₃)₃ and H₂SO₄ is:
2 Al(NO₃)₃ + 3 H₂SO₄ → Al₂(SO₄)₃ + 6 HNO₃
By stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of reagents are required:
Al(NO₃)₃: 2 molesH₂SO₄: 3 molesBeing the molar mass of the elements:
Al: 27 g/moleN: 14 g/moleO: 16 g/moleH: 1 g/moleS: 32 g/molethen the molar mass of the reactants are:
Al(NO₃)₃: 27 g/mole + 3*(14 g/mole + 3*16 g/mole)= 213 g/moleH₂SO₄: 2*1 g/mole + 32 g/mole +4*16 g/mole= 98 g/moleThen, by reaction stoichiometry, the following reagent mass amounts are required:
Al(NO₃)₃: 2 moles* 213 g/mole= 436 g H₂SO₄: 3 moles*98 g/mole= 294 gThen you can apply the following rule of three: If by stoichiometry 436 g of Al(NO₃)₃ react with 294 g of H₂SO₄, 78.86 g of Al(NO₃)₃ with how much mass of H₂SO₄ will it react?
[tex]mass of H_{2} SO_{4} =\frac{78.86 grams of Al(NO_{3} )_{3}*294gramsofH_{2} SO_{4} }{436 grams of Al(NO_{3} )_{3}}[/tex]
mass of H₂SO₄=53.18 g
53.18 grams of H₂SO₄ are needed to react with 78.86 grams of Al(NO₃)₃.
When a solid with a mass of 53.78 g is added to 50.0 ml of water in a graduated cylinder, the volume increases to 56.4 ml. Calculate the density of the solid.
Answer:
The answer is 8.40 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\ [/tex]
volume = final volume of water - initial volume of water
volume = 56.4 - 50 = 6.4 mL
We have
[tex]density = \frac{53.78}{6.4} \\ = 8.403125[/tex]
We have the final answer as
8.40 g/mLHope this helps you
please help this is worth half of my grade! what letter represents the trough of the wave a,b,c,d,e
Hello good afternoon...God bless the answer to your following question is D
because...A crest point on a wave is the maximum value of upward displacement within a cycle. A crest is a point on a surface wave where the displacement of the medium is at a maximum. A trough is the opposite of a crest, so the minimum or lowest point in a cycle.
What is the difference between a hyrdrogen atom and a hydrogen molecule?
Answer:smaller
Explanation:
Answer:
Explanation:
A hydrogen atom (H) is bonded to form hydrogen gas(H2)(a molecule)
How many ATOMS of
Hydrogen are found in
Butane (C4H10)?
Answer:
does this help? 17.342%
Explanation:
lonic bonds tend to form between two atoms with what characteristics?
Answer:Ionic bonds are formed through the exchange of valence electrons between atoms, typically a metal and a nonmetal. The loss or gain of valence electrons allows ions to obey the octet rule and become more stable. Ionic compounds are typically neutral. Therefore, ions combine in ways that neutralize their charges.
Explanation:
Ionic bonds tend to form between two atoms with a high electronegativity difference.
Explanation:
An Ionic bond is defined as a chemical bond in which the complete transfer of electrons occurs from one atom to another.The transfer of electrons occurs from less electronegative atom to highly electronegative atomThe high electronegativity difference between the atomsCompounds with ionic bonds categorized as ionic compoundsSo, from this, we can conclude that ionic bonds tend to form between two atoms with a high electronegativity difference.
Learn more about ionic compounds here:
brainly.com/question/7193259?referrer=searchResults
brainly.com/question/1669915?referrer=searchResults
Look at the chemical equation below.
2N2 + O2 2N2O
How many Nitrogen molecules are present? ___________
How many Oxygen molecules are present? ___________
How many N2O molecules are present? ___________
The molecules of Nitrogen, oxygen, and N₂O are 2, 1, and 2 respectively.
What is the chemical equation?A chemical equation can be defined as the expression of a chemical reaction in terms of the chemical symbols of the substances. A chemical equation has reactants, formed products, and an arrow indicating the direction of the reaction.
The equation in which the number of atoms of each element is equal on either side of the chemical equation of a reaction is called a balanced chemical equation.
According to the law of mass conservation, the total mass of the elements on the reactant side should be equal to the total mass of elements on the product side.
Given, the chemical equation of the reaction of nitrogen ad oxygen gas can be written as:
2N₂ + O₂ → 2N₂O
The number of molecules of Nitrogen gas is 2 and the molecules of oxygen gas are one and the molecules of N₂O are equal to 2.
Learn more about the chemical equation, here:
brainly.com/question/28294176
#SPJ3
Arrange the following elements in order from least to greatest electronegativity:
Ca, F, Ne, Fe?
Answer:
The electronegativity from order of least to highest is:
Ne, Ca, Fe, F
Explanation:
Elements in the periodic table have been arranged based on their level of electronegativity (which is the ability of an atom to attract electrons).
According to Paulings scale of rating elements based on their electronegativity, the electronegativity value of Fe, Ca, Ne, and F are 1.83, 1, 0 and 3.98 respectively.
Hence, based on Pauling scale, the order of electronegativity from least to highest is:
Ne > Ca > Fe > F
hEy PeEpS!! SEED HALP!!will give da crown to someone u-u
Answer:
D
Explanation:
This answer is correct; if you want you can use context clues, the middle two are not benefits, the first one is just absurd, so the only other logical answer id D. Also, its true.
The middle two are negative, and therefore cannot be benefits no matter how they are looked at.
For an explanation of the first answer and why it's wrong, read the comments.
The density of water is 1.00 g/mL. Which substance below can float on water?
Answer:
ice, air, ducks and fabric
Explanation:
its common sense
Also need help with this question .. ik I’m asking a lot, I’m very confused
Answer:
see the pic for the answer
Please help
2C3H5O2
1.How many elements are present?
2. How many hydrogen atoms are there?
3. How many oxygen atoms are there?
4.How many total atoms are there?
Answer:
1. 3 elements: C, H, O
2. 10
3. 4
4. 20
Explanation:
How many atoms are in 3CaCO3
Answer:
15
Explanation:
3 Calcium
3 Carbon
9 Oxygen
A block of lead displaces 50.5ml of water. The block weighs 698 g. From this
information, calculate the density of lead.
Answer:
13.82 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\ [/tex]
From the question we have
[tex]density = \frac{698}{50.5} \\ = 13.8217...[/tex]
We have the final answer as
13.82 g/mLHope this helps you
Convert 5 micrometers to meters
Isopropyl alcohol is a liquid with a density of 0.785 g/cm^3. How much volume would be taken up be 50.0 grams of isopropyl alcohol
Answer:
63.94 cm³Explanation:
The volume of a substance when given the density and mass can be found by using the formula
[tex]volume = \frac{mass}{density} \\ [/tex]
From the question we have
[tex]volume = \frac{50}{0.785} \\ = 63.694267...[/tex]
We have the final answer as
63.94 cm³Hope this helps you
training doctors to recognize child abuse and explain how you could apply it to teaching. Write a short paragraph, using complete sentences with proper grammar, spelling, and punctuation.
Answer: E
Explanation:
What happens to the dry ice after sometime?
Answer:
As a rough rule, five pounds of dry ice will turn from a solid to a gas in 24 hours. It's best to pick up the block of ice just a few hours before your party so it's as frozen as possible when the bash starts.
Explanation:
Suppose you found a material in which 12.5% of the original radioactive atoms were present. If the half-life is 10years, how old is the material?
Answer:
The material is 30 years old.
Explanation:
The decay of radioactive isotopes can be modelled by the following ordinary differential equation:
[tex]\frac{dm}{dt} = -\frac{m(t)}{\tau}[/tex] (Eq. 1)
Where:
[tex]m(t)[/tex] - Current mass of the isotope, measured in grams.
[tex]\tau[/tex] - Time constant, measured in years.
[tex]\frac{dm}{dt}[/tex] - Rate of change of the isotope in time, measured in grams per year.
After some handling, we find that the solution of the differential equation is:
[tex]\frac{m(t)}{m_{o}} = e^{-\frac{t}{\tau} }[/tex] (Eq. 2)
Where:
[tex]m_{o}[/tex] - Initial mass of the isotope, measured in grams.
[tex]t[/tex] - Time, measured in years.
Now we clear time within the expression above:
[tex]t = -\tau\cdot \ln \frac{m(t)}{m_{o}}[/tex]
Besides, we determine the time constant in terms of the half-life ([tex]t_{1/2}[/tex]), measured in years:
[tex]\tau = \frac{t_{1/2}}{\ln 2}[/tex] (Eq. 3)
If we know that [tex]t_{1/2} = 10\,yr[/tex] and [tex]\frac{m(t)}{m_{o}} = 0.125[/tex], then the age of the material is:
[tex]\tau = \frac{10\,yr}{\ln 2}[/tex]
[tex]\tau = 14.427\,yr[/tex]
[tex]t = -(14.427\,yr)\cdot \ln 0.125[/tex]
[tex]t \approx 30\,yr[/tex]
The material is 30 years old.
A cylinder at left with balls evenly spaced throughout the cylinder with an arrow leading to a cylinder at right with balls stacked near the bottom of the cylinder.
Which change of state is shown in the model?
condensation
deposition
boiling
freezing
help meh plz
Answer:
boiling
Explanation:
Answer:
boiling
Explanation:
Which of the following has the highest electronegativity?
A. Na
B. Li
C. C
D. Si
Answer:
C. C, because it’s the highest of all four and C is 2,5 which is medium but the highest one.
Answer:
Si
Explanation:
Because it has the most electrons among the four
Help! I am in a hurry! Will get brainliest if correct!
Which of the following is a hypothesis for an experiment measuring solubility of sodium sulfate?
A. O Sodium sulfate will dissolve better in cold water
B.
Sodium sulfate is toxic (poisonous; deadly) to humans.
c. Add sodium sulfate to water
D. O Sodium sulfate is a white powder
After pollen lands on the stigma of a flower, which of the following happens first?
Help I will give brainlist
Positive ions have ______ (More or Less) protons than electrons.
Answer:
More i think im remembering correctly
Explanation:
This is a science question. What is the skateboarder’s acceleration?
Answer:
2.4
Explanation:
Divide 7.0 by 3.0 you get 2.333333 then round it of to 2.34
In which of the following is the number of neutrons correctly represented
Answer:
there needs to be a picture to answer
16. What are the reactants in the equation?
iron + chlorine —> iron chloride
(1) iron chloride only
(2) iron only
(3) chlorine only
(4) iron and iron chloride
(5) iron and chlorine
10. A gas sample that has a mass of 6g occupies 400 mL at 504°C and a pressure of 600 mm Hg. Calculate the gas’s density at STP.
Answer:
51 g/mol
Explanation:
Whenever you see molar masses in gas law questions, more often than not density will be involved. This question is no different. To solve this, however, we will first need to play with the combined ideal gas equation PV=nRT to make it work for density and molar mass. The derivation is simple but for the sake of time and space, I will skip it. Hence, just take my word for it that you will end up with the equation:
Atoms of noble gases are generally inert because..
A. they are neutral atoms.
B. their outer electron levels are filled.
C. they are too large to react.
D. they are not charged.
Answer:
B. their outer electron levels are filled
What type of bond (Ionic, Covalent or metallic) would be created when titanium bonds with chlorine?
(electronegativity values Ti = 1.54 Cl = 3.16)
Answer:
Covalent
Explanation:
Titanium on reaction with chlorine forms Titanium tetra chloride(TiCl4).
Titanium holds strong covalent bond with chlorine in TiCL4