Considering the definition of compound, chemical formula and Avogadro's Number, there are 4.8184×10²⁴ atoms of O in 2 moles of H₃PO₄.
What is compound and chemical formulaIn a compound there are atoms of different elements joined by forces that we call chemical bonds.
The chemical formula indicates the number and type of different atoms present in the molecule.
Avogadro's NumberAvogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023×10²³ particles per mole. Avogadro's number applies to any substance.
Atoms of OIn this case, in 1 mole of the compound H₃PO₄ you have:
3 moles of H.1 mol of P.4 moles of O.Then, in 2 moles of H₃PO₄ you have 8 moles of O.
Now, you can apply the following rule of three: if by definition of Avogadro's number 1 mole of oxygen contains 6.023×10²³ atoms, 8 moles of oxygen contains how many oxygen atoms?
[tex]number of atoms=\frac{8 molesx6.023x10^{23}atoms }{1 mole}[/tex]
number of atoms= 4.8184×10²⁴ atoms
Finally, there are 4.8184×10²⁴ atoms of O in 2 moles of H₃PO₄.
Learn more about Avogadro's Number:
brainly.com/question/11907018?referrer=searchResults
brainly.com/question/1445383?referrer=searchResults
brainly.com/question/1528951?referrer=searchResults
#SPJ1
I need help with this i need help by sb
Answer:
30N to the left.
Explanation:
There is no net vertical force as the 45N force upwards and the 45N force downwards cancel each other out.
Horizontally, the resultant force is the 30N to the left as the 45N force to the left is in opposite direction to the 15N force to the right, so they are subtracted:
45N - 15N = 30N
Hope this helps!
47. Which of the following statements about the
bonds in the reactants and products is most
accurate?
(A) The sum of the bond enthalpies of the bonds
in the reactant is greater than the sum of the
bond enthalpies of the bonds in the
products.
(B) The sum of the bond enthalpies of the bonds
in the reactant is less than the sum of the
bond enthalpies of the bonds in the
products.
(C) The length of the bond between carbon
and oxygen in CH3OH is shorter than the
length of the bond between carbon and
oxygen in CO.
(D) All of the bonds in the reactant and products
are polar.
Answer:
a
Explanation: because the sum of the bond enthalpies of the bond in the reactant is greater than the sum.
-
Solution 1: 0.1 M - Dim Light Solution 2: 0.1M - Bright
Bulb
Which solution from the data table most likely contains a strong acid?
A. Solution 1 is a strong acid due to a large number of dissociated ions.
B. Solution 1 is a strong acid due to a small number of dissociated ions.
C. Solution 2 is a strong acid due to a large number of dissociated ions.
D. Solution 2 is a strong acid due to a small number of dissociated ions.
Answer:
: The conductivity of electrolyte solutions: (a) 0.1 M NaCl (b) 0.05 M NaCl (c) 0.1 M HgCl2. An electrolyte solution conducts electricity because of the movement of ions in the solution (see above). The larger the concentration of ions, the better the solutions conducts. Weak electrolytes, such as HgCl2, conduct badly because they produce few ions when dissolved (low concentration of ions) and exist mainly in the form of molecules.
Explanation:
A student is studying a sample of neon in a container with a moveable piston (this means the container can change in size). If the sample in the container is initially at a pressure of 759.4 torr when the container has a volume of 97.6 mL, what is the pressure of the gas when the piston is moved so that the volume of the container becomes 146.6 mL? Round your answer to the nearest 0.01 and include units!
The new pressure of the gas would be 505.58 torr
Boyle's lawAccording to Boyle's law, the pressure of a gas is inversely proportional to its volume, provided that the temperature is constant.
This can be mathematically represented as: P1V1 = P2V2
In this case, P1 = 759.4 torr, P2 is what we are looking for, V1 = 97.6 mL, and V2 = 146.6 mL
Hence, P2 = P1V1/V2 = 759.4x97.6/146.6 = 505.58 torr
More on Boyle's law can be found here: https://brainly.com/question/1437490
#SPJ1
The same elements may combine in different ratios to form the same compound?
Answer:
law of multiple proportion
Explanation:
A certain compound is made up of one carbon (C) atom, two chloride (Cl) atoms and one oxygen (o) atom what is the chemical formula of this compound
CO(Cl)2 will be the formula which has a common name of phosgene a highly poisonous gas .
Besides drinking water, how is water helpful for life and nature?
Answer:
It keeps us alive, helps us grow plants, helps plants thrive, gives us food, helps keep our animals and crops healthy, cleans us, and so much more
Explanation:
This is an impossible formula. If it were real, determine the molar mass of:
Fe1S1O5
The molar mass of the ammonium lauryl sulfate is 283.43 g/mol.
What is Ammonium lauryl sulfate?It is also called ammonium dodecyl sulfate. It is used in shampoos we use for hair. It can be dissolved in both polar and non-polar solvent. It can cause skin irritation sometimes.
Thus, the molar mass of the ammonium lauryl sulfate is 283.43 g/mol.
Learn more about Ammonium lauryl sulfate
https://brainly.com/question/16483020
#SPJ1
The decisions people (society) make to reduce their consumption of resources will most likely have a positive impact on the environment.
Question 30 options:
True
False
Answer:
True
Explanation:
I think it is common sense to assume that if we all came together to reduce our consumption then less resources would be harvested from envrionment and thus we would have positive impact on environment.
Name the following branched alkanes. Two of these are isomers of each other, put a star ★ in their boxes.
Answer:
square boxes
✪
Explanation:
if you like my answer
Which of the following matches a human action with its impact?
Construction of bridges : Water pollution
Construction of dams : Decrease in carbon dioxide level
Use of fertilizers : Increase in population of aquatic animals
Decrease in honeybee population : Increase in plant population
Answer:
hi I'm alvin and it's d
Explanation:
brainliest please
Answer:
Use of fertilizers :Increase in population of aquatic animals.
How do meteoroligists measure wind chill
Answer:
Researchers at the NWS use a mathematical formula to calculate wind chill. In that formula, the wind speed in miles per hour (v) is subtracted from the air temperature in degrees Fahrenheit (T). It can be used in temperatures below 50°F and wind speeds above 3 mph.
Explanation:
how many liters of water are needed to prepare 756 g of CaCO3 for a 3.50 M solution? MM=100.1 grams/mole
The volume of water needed to prepare the solution given the data is 2.16 L
What is molarity?This is defined as the mole of solute per unit litre of solution. Mathematically, it can be expressed as:
Molarity = mole / Volume
How to determine the mole of CaCO₃Mass of CaCO₃ = 756 g Molar mass of CaCO₃ = 100.1 g/mol Mole of CaCO₃ =?Mole = mass / molar mass
Mole of CaCO₃ = 756 / 100.1
Mole of CaCO₃ = 7.55 moles
How to determine the volume Mole of CaCO₃ = 7.55 molesMolarity = 3.5 MVolume = ?Volume = mole / molarity
Volume = 7.55 / 3.5
Volume = 2.16 L
Learn more about molarity:
https://brainly.com/question/15370276
#SPJ1
cadmium metal reacts with a nickel (III) chlorate solution
What would the charge on KAt be?
The overall charge of the given compound of potassium and Arsenic is zero (0).
What is the charge of an atom?
An atom consists of a positively charged nucleus, surrounded by one or more negatively charged particles called electrons. When the number of protons exceed the number of electrons, the atom will positively charged and it will be negatively charged if the number of electrons exceed the number of protons.
For the given compound;
KAs; As (Arsenic = -3) + K (potassium = +3)KAs overall charge = -3 + 3 = 0Thus, the overall charge of the given compound of potassium and Arsenic is zero (0).
Learn more about charge here: https://brainly.com/question/25922783
#SPJ1
HBr + H,SO, - SO, + Br, + H,O
Did S change oxidation number?
Answer:
I think the answer might be yes..
What is the best tool for separating marbles from water?
a.screen
b.filter paper
c.evaporation dish
Answer:
the best tool for separating marbles from water is evaporation disc
A 30:70 (mole %) ratio of acetone:water is heated to 54.36 ∘C at 760 mmHg. What is the total vapor pressure of the system? The vapor pressures for acetone and water at 54.36 ∘C are 712 mmHg and 154 mmHg respectively.
Answer:
numbers
Explanation:
idek im just bored
Vanessa made a list comparing the differences between the outer coverings in plants and animals, but she made a mistake. Read the table and then choose the statement that explains why the list is incorrect.
The difference between the outer covering of plants and animals is that plant cell has cellulose cell wall while animal cell is surrounded by a cell membrane
What is a cell?A cell is the structural and functional unit of an organism which is capable of existing alone as it contains organelles that perform specific functions.
The plant cell is covered by a rigid cell wall which contains cellulose as its outer covering.
The animal cell contains not cellulose cell wall at its out covering but instead it is covered by a cell membrane.
Therefore, the difference between the outer covering of plants and animals is that plant cell has cellulose cell wall while animal cell is surrounded by a cell membrane.
Learn more about cell here:
https://brainly.com/question/18243320
#SPJ1
If you had five moles of sodium chloride how many moles of sodium hydroxide could you produce?
How many grams of chlorine atoms are present in a 3.45 g sample of barium chloride (BaCl2)?
Grams are the unit of measurement of the mass or the weight of the substance. There are 1.17 gms of chlorine atoms in the sample.
What is mass?The mass of the substance is the multiplication of the moles and the molar mass.
Barium chloride dissociates as:
BaCl₂ ⇄ Ba²⁺ + 2 Cl⁻
From the reaction, it can be said that 1 mole of barium chloride dissociates into 1-mole barium ion and 2 moles of chloride ions.
Moles of barium chloride are calculated as:
Moles = mass ÷ molar mass
= 3.45 gm ÷ 208.23 g/mol
= 0.016 moles
If 1 mole of Barium chloride has 2 moles then 0.016 moles of the sample will have, 0.0331 moles of chloride ions.
The mass of chlorine atoms is calculated as:
Mass = moles × molar mass
= 0.0331 × 35.45
= 1.17 gms
Therefore, 1.17 gms of chlorine atoms are present in barium chloride.
Learn more about mass here:
https://brainly.com/question/9406646
#SPJ1
What is the molarity of ions in a 0.339 M solution of MgBr₂ assuming the compound dissociates completely?
Molarity is the molar concentration of the solution with respect to the moles and the volume. The molarity of the magnesium ion will be 0.339 M, and the Bromium ion will be 0.678M.
What is molarity?Molarity is the proportion of the moles of the solute to the volume in liters of the solution present. The compound magnesium bromide completely dissociates as:
MgBr² ⇆ Mg⁺² + 2Br⁻
The molarity of the magnesium ion will be equal to the M of the magnesium bromide and hence, will be 0.339 M.
The molarity of the bromide ions will be equal to two times the M of the magnesium bromide species and hence is 0.678 M.
Therefore, the molarity of the magnesium ion will be 0.339 M, and the Bromium ion will be 0.678M.
Learn more about molarity here:
https://brainly.com/question/14804473
#SPJ1
Clear
What isotope is formed from the beta decay of zirconium-97
о
Niobium -96
Niobium - 97
Zirconium - 96
O Zirconium - 98
Zirconium - 96 isotope is formed from the beta decay of zirconium-97 , Option C is the correct answer .
What are Isotopes ?Atoms are composed of a cloud of electrons surrounding a dense nucleus that is 100,000 times smaller and comprised of protons and neutrons.
The number of protons(i.e., atomic number, "Z") determines the element.
Isotopes are atoms of the same element that have the same number of protons (i.e., atomic number, "Z") but a different number of neutrons, meaning that their mass number, "A", varies.
Naturally occurring zirconium (⁴⁰Zr) is composed of four stable isotopes
One very long-lived radio isotope (⁹⁶Zr), a primordial nuclide that decays via double beta decay with an observed half-life of 2.0×10¹⁹ years
The second most stable radioisotope is ⁹³Zr, which has a half-life of 1.53 million years.
Thirty other radioisotopes have been observed.
All have half-lives less than a day except for ⁹⁵Zr (64.02 days), ⁸⁸Zr (83.4 days), and ⁸⁹Zr (78.41 hours).
The primary decay mode is electron capture for isotopes lighter than ⁹²Zr
and the primary mode for heavier isotopes is beta decay.
Therefore Zirconium - 96 isotope is formed from the beta decay of zirconium-97 , Option C is the correct answer .
To know more about Isotope
https://brainly.com/question/11680817
#SPJ1
1) Students are interested in quickly completing their lab experiment before going to lunch. What are 4
ways to increase the reaction rate below?
Zn() + 2HCl(aq)
Hz(s) + ZnCl2(g) + heat
The reaction rate can be increased by increasing the temperature, increasing the concentration of reactants, using catalysts, or increasing the surface area of the reactants.
Factors affecting rates of reactionsThe factors affecting the rate of reactions include:
Temperatureconcentration of reactantsAddition of catalystsSurface area of reactantsEach factor affects the rate of reaction as follows:
Increased temperature increases the rate of reactionIncreasing the concentration of reactants increases the rate of reactionAdding catalysts increases the rate of reactionsIncreasing the surface area of reactants increases the rate of reactions.More on factors affecting rates of reactions can be found here: https://brainly.com/question/14817541
#SPJ1
What is an example of a conductor?
A. A glass bowl
B. A wooden spoon
C. A plastic fork
D. A metal knife
Answer: its D.
Explanation: because metal is a conductor hope it helps :>
What completely ionizes in solution
Answer:
Strong acids. hope this helps :)
I think that when the temperature decreases, the pressure will __________. When things are cooled,________________..
Answer:
See below ~
Explanation:
From The Ideal Gas Equation,
P ∝ TTherefore,
I think that when the temperature decreases, the pressure will decrease. When things are cooled, pressure decreases.
28.25 What two aldoses yield D-xylose on Wohl degradation?
56.5
Explanation:
the degradation would be 28.25 times 2
What is ester?
help me pleaseee
Answer:
an organic compound made by replacing the hydrogen of an acid by an alkyl or other organic group. Many naturally occurring fats and essential oils are esters of fatty acids
Explanation:
ester, any of a class of organic compounds that react with water to produce alcohols and organic or inorganic acids. Esters derived from carboxylic acids are the most common. The term ester was introduced in the first half of the 19th century by German chemist Leopold Gmelin
Describe the problem you have chosen to investigate. Plan your investigation and write out the steps in your procedure. Include a sketch of your set up. Explain how this procedure and set-up will help you investigate the problem.
Answer both questions asap for brainliest
Carry out your experiment. Present evidence that you have carried out the experiment below. You may upload photos as evidence. Record your data in a chart. Be sure you have starting data and several data points. Analyze your results. You may want to present your data as a graph. Did the investigation you planned determine the relationships among temperature, the energy transferred, the type of matter, the mass, and the change in the average kinetic energy of the particles as measured by the temperature of the sample? How do you know? Use complete sentences and paragraph form for your analysis.
Answer: baited.
Explanation:
