Answer:
4725.6 g of (NH4)2SO4
Explanation:
Molar mass of a substance is the number of mass of the substance contained in one mole of the substance. It is also called the formula weight of the compound. The formula mass of (NH4)2SO4 is 132 g/mol Hence;
Now we know that;
1 mole of (NH4)2SO4 contains 132 g of (NH4)2SO4
35.8 moles of (NH4)2SO4 contains 35.8 * 132/1
= 4725.6 g of (NH4)2SO4
What is the mass of 34.6 L of oxygen? How many molecules of oxygen are in 34.6 L of oxygen?
Answer:
49.4 grams; 9.29 x 10^23 molecules O2
Explanation:
In order to solve for the mass of oxygen, you first must find out how many moles of oxygen there are in 34.6 L.
There are 22.4 L in one mole of gas, so to get amount of moles, divide 34.6 by 22.4.
34.6 / 22.4 = 1.544 mol
In order to calculate mass, multiply the amount of moles by the molar mass of oxygen, which is in this case 32.00 g/mol.
1.544 * 32.00 = 49.4 grams
To calculate the amount of molecules, multiply the amount of moles by Avogadro's number, 6.02 x 10^23, which basically represents how many atoms/molecules there are in a mole of any substance.
1.544 * (6.02 x 10^23) = 9.29 x 10^23 molecules O2
What is one question I would ask from conducting a research on inhalants?
A 125 ml sample of gas is at STP how many moles of gas are in the sample
Answer:
5.58*10⁻³ moles of gas are in the sample.
Explanation:
The STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.
Being 1000 mL equivalent to 1 L, then 125 mL is equal to 0.125 L. Then you can apply the following rule of three: if by STP conditions 22.4 L are occupied by 1 mole, 0.125 L are occupied by how many moles?
[tex]amount of moles=\frac{0.125 L*1 mole}{22.4 L}[/tex]
aomunt of moles= 5.58*10⁻³ moles
5.58*10⁻³ moles of gas are in the sample.
Answer:
5.58×10⁻³ moles of gas
Explanation:
There is a rule that says, that 1 mol of any gas, at STP is contained at 22.4L of volume.
We can apply a conversion factor
0.125 L . 1 mol / 22.4 L = 5.58×10⁻³ moles
Notice we converted volume from mL to L
We can also aply the Ideal Gases Law.
At STP we have 1 atm of pressure and 273.15K of T°
We replace data: 0.125 L . 1 atm = n . 0.082 . 273.15K
(0.125 L . 1 atm) / (0.082 . 273.15 K) = n
n = 5.58×10⁻³ moles
Which of the following elements has the lowest electron affinity?
a. Si
b. F
c. Cl
d. K
Answer:
k
Explanation:
electron affinity (EA) depends on various factors like effective nuclear charge (enc) , size of the atom, ellipticity of sub-shell (ep) , nature of configuration.
more is the enc more will be the EA
more is the size less will be the EA
more valance shell ellipticity (closer to the nuclei) more will the EA ( all given element posses P orbital in the valance shell)
4. Balance the following chemical equation. Say what the coefficients "a"
and "b" are
2 Fe2O3 + 3 C → a Fe + b CO2
Answer:
a = 4
b = 3
Explanation:
SOLUTION :-
Balance it by using 'hit & trial' method , and you'll get the answer :-
2Fe₂O + 3C → 4Fe + 3CO₂
⇒ a = 4 ; b = 3
VERIFICATION :-
In reactant side of equation :-
Number of atoms in Fe = 2×2 = 4Number of atoms in O = 2×3 = 6Number of atoms in C = 3×1 = 3In product side of equation :-
Number of atoms in Fe = 4×1 = 4Number of atoms in C = 3×1 = 3Number of atoms in O = 3×2 = 6Number of atoms of each element is equal in both reactant & product side of equation. Hence , the equation is balanced.
Who has played Amoung us and a stranger got ur number or location on there?
Yep, it happened to me
When 3.20 moles of magnesium is heated and placed in a container of nitrogen gas the two substances undergo a synthesis reaction. How many moles of nitrogen gas will react? 3 Mg (s) + 1 N2 (g) → 1 Mg3N2 (s)
Answer:
1.06 moles of nitrogen gas will react with 3.20 moles of magnesium in the container.
Explanation:
[tex]3 Mg (s) + 1 N_2 (g) \rightarrow 1 Mg_3N_2 (s)[/tex]
Moles of magnesium heated = 3.20 mol
According to reaction, 3 moles of magnesium reacts with 1 mole of nitrogen gas, then 3.20 moles of magnesium will react with:
[tex]=\frac{1}{3}\times 3.20 mol=1.07 \text{ mol of }N_2[/tex]
1.06 moles of nitrogen gas will react with 3.20 moles of magnesium in the container.
Which is true for a substance that releases energy?
OA. The energy release decreases the molecular motion and the kinetic energy of the substance.
B. The energy release decreases the molecular motion but increases the kinetic energy of the substance.
C. The energy release increases the molecular motion and the kinetic energy of the substance.
D. The energy release increases the molecular motion but decreases the kinetic energy of the substance.
E. The energy release is used only to change the state of the substance.
Juan Carlos placed 35 grams of ice into a dry, 200-gram container. The top
of the container was attached tightly. When the ice was completely melted, the
student measured the mass of the container with the liquid water. What should the
mass of the liquid water in the container be?
A. 35 grams
B. 165 grams
C. 200 grams
D. 235 grams
Mass of the liquid water in the container is 35 grams-
Mass doesn't depends upon the state of compounds.The mass of the liquid water in the container should be 35 grams.
Mass would not change during a change of state because the number of particles does not change during a state change. It does not matter if a substances freezes, boils, melts, sublimates.
So, the mass of liquid water in the container is the same as ice. Hence, the correct option is (A).
To know more about:-
brainly.com/question/11810264
Circle the solution with the highest concentration
a. 5.0M
c. 0.6M
b. 1.0M
d. 0.75M
Answer:
answer is option a..............
Which pollution effects the environment the most?
A. air pollution
B. water pollution
C. land pollution (ex. throwing trash in nature)
D. Noise pollution
Answer:
Air pollution effect the most
ANSWER :
A. air pollutionExtra Information :
❥ Air pollution can damage crops and trees in a variety of ways.
❥ Ground-level ozone can lead to reductions in agricultural crop and commercial forest yields, reduced growth and survivability of tree seedlings, and increased plant susceptibility to disease, pests and other environmental stresses (such as harsh weather).
Hope it helps ya...!!♡
In the future, biotechnology could be used to select traits in unborn babies.
Should this be allowed? Explain your stance.
Of the following which atom pairs will form covalent bonds
Answer:
si and p
o and F
Explanation:
covalent bonds are formed between non metals
1 cannot be accepted as Na is a metal
3 cannot be accepted as Ca is a metal
5 cannot be accepted as Mg is a metal
Jane has a weight of 500 N. The area of her two feet is 250 cm2. The pressure when she is standing is Pressure = 500/250 = 2 N/cm2.Jane wears stiletto heels. The area of one stiletto heel is 2 cm2. Calculate the pressure on the floor when Jane puts all her weight on one heel. Show your working.
Explanation:
pressure=force/area
pressure=500/2
pressure=250N/cm²
The total pressure of an 02-Ar-He gas mixture is 755 mmHg. If the partial pressure of Ar is 174 mmHg
and the partial pressure of He is 389 mmHg,
then the partial pressure of 02 is what?
Water flows more easily than syrup, which means water has
A. higher viscosity than syrup
B. lower viscosity than syrup
C. equal viscosity to syrup
Answer:
lower viscosity than syrup
Answer:
higher viscosity than syrup flows more easily than syrup.
Please give me Brainliest answer
IN A MIXTURE OF GASES, HOW IS THE TOTAL PRESSURE RELATED TO THE PARTIAL PRESSURES OF THE GASES INTHE MIXTURE?
Answer:
Partial pressure of gas = mole fraction of the gas x total pressure
Explanation:
In a gas mixture, the partial pressure of each of the gases present in the gas mixture is proportional to the mole fraction of the gases. The pressure exerted by each of the gas in the gas mixture is known as partial pressure. This is independent of the pressures that is exerted by the gases that is present in the mixture. Therefore, total pressure which is exerted by the gas mixture is the summation of the of the partial pressures of each of the gases in the mixture. This is given by Dalton's law of partial pressures.
Mathematically,
Partial pressure of gas = mole fraction of the gas x total pressure
what element does HgNo
Answer:
Mercury is a chemical element with symbol Hg and atomic number 80. Classified as a transition metal, Mercury is a liquid at room temperature.
...
Explanation:
Answer:
Mercurous nitrate!
Fusion reactions power the _____ in space. Humans currently use fusion in _____ , but researchers are seeking more applications.
Answer:
Sun and the stars, nothing humans don't use fusion at all
Explanation:
Nuclear fusion reactions power the sun in space. Humans currently use fusion in nuclear weapons by means of nuclear reactions, but researchers are seeking more applications.
What are nuclear reactions?There are two types of nuclear reactions which are nuclear fusion and nuclear fission .They involve the combination and disintegration of the element's nucleus respectively.
In nuclear fission, the nucleus of the atom is bombarded with electrons of low energy which splits the nucleus in to two parts .Large amount of energy is released in the process.It is used in nuclear power reactors as it produces large amount of energy.
In nuclear fusion,on the other hand, is a reaction which occurs when two or more atoms combine to form a heavy nucleus.Large amount of energy is released in the process which is greater than that of the energy which is released in nuclear fission process.
Learn more about nuclear reactions,here:
https://brainly.com/question/12649087
#SPJ7
What is the formula of the compound that occurs when Strontium and Chlorine combine
ionically?
Answer:
SrCl2
Explanation:
In a neutral solution, the concentration of H+ is
Group of answer choices
Answer:
equal to [OH-]
Hydrogen ion concentration is more conveniently expressed as pH, which is the logarithm of the reciprocal of the hydrogen ion concentration in gram moles per liter. Thus, in a neutral solution the hydrogen ion (H+) and the hydroxyl ion (OH−)
please pick the correct answer & i will mark brainliest
Answer:
It's the second answer
Explanation:
You learned this in elementary school mixtures aren't chemically mixed.
Answer:
2nd Option(sorry if i'm too late)
Explanation:
A mixture is a material system made up of two or more different substances, which are mixed but not combined chemically. A mixture refers to the physical combination of two or more substances in which the identities of the individual substances are retained.
Basically, a mixture is not chemically combined
I hope this helps <3Have a great day :DIn general, what region of the country most likely experiences the greatest amounts of physical weathering and why?
Earth Science
Answer:
Northern region
Mechanical weathering is the set of various processes of weathering that break apart rocks into particles that can be carried away by wind and water erosion. The five major mechanisms of mechanical weathering are abrasion, crystallization of ice or certain minerals, hydration shattering, thermal fracture and exfoliation.
5g metal Zinc reacts with hydrochloric acid to form hydrogen gas. What is the balanced chemical equation to represent the reaction
Answer:
Zn (s) + HCl (aq) → ZnCl₂ (aq) + H₂ (g) ↑
Explanation:
Let's define the reactants:
Zn (s)
HCl (aq)
One of the product is: H₂ (g)
This reaction can also produce ZnCl₂ (s)
Let's make the reaction:
Zn (s) + HCl (aq) → ZnCl₂ (aq) + H₂ (g) ↑
Notice that the the hydrogen gas is released from the tube, that's why the up arrow.
This is a redox reaction because the Zn and H chage their oxidation states.
Zn ⇄ Zn²⁺ + 2e⁻ Oxidation (it released two electrons)
Oxidation state is increased
2H⁺ + 2e⁻ → H₂ Reduction (It gained two electrons)
Oxidation state is decreased
The oxidation state of elements at ground state is 0
HELP ASAP PLEASE CHEMISTRY
The rate of reaction was measured during a chemical reaction. After the first 3 seconds, the rate of reaction was 1.8 x10−6 M/s. Which of the following would you expect after another 3 seconds?
The rate would be lower, and the concentration of products would be higher.
The rate would be lower, and the concentration of products would be lower.
The rate would be higher, and the concentration of products would be higher.
The rate would be higher, and the concentration of products would be lower.
Answer:
The rate would be higher, and the concentration of products would be lower.
Explanation:
The correct answer is The rate would be lower, and the concentration of products would be higher.
The rate of reaction refers to the speed with which reactants are converted into products.
The rate of reaction decreases as the reaction progresses because more reactants are being converted into products.
As such, the reactant concentration decreases and the concentration of products increases.
Hence, after three seconds, the rate would be lower, and the concentration of products would be higher.
https://brainly.com/question/23761331
A pea plant has two dominant alleles for plant height – tall. We say that this plant is?:
which of the following does not contain a covalent bond ( please answer asap!! )
Answer:
Option 4
Explanation:
What is the molarity of 15.0 milliliters of an unknown acid that is titrated
with a 1.25 M NaOH solution and required 24.65 milliliters of base to
complete the titration?
Answer:
~2.054M
Explanation:
In this question ,I am going to assume that the acid is monoprotic acid(contains only one hydrogen) which I'll represent by HA.
Chemical equation:
NaOH(aq) + HA(aq)----->NaA(aq) + H2O(l)
The mole ratio of NaOH:HA is 1:1
1.25M NaOH=1.25 Moles/L or 1.25 moles /1000ml of NaOH
(1.25 moles /1000ml) x (24.65ml)=0.0308125 moles NaOH
Mole ratio is 1:1
So, moles of HA are also 0.0308125 moles
volume of HA =15ml
To find molarity of HA:
=(0.0308125 moles x 1000ml)/(15ml)
~2.054M of HA
~Hope it helps:)
pls balance this in Lcm method AL BR3 + K2 SO4 -----> KBr +AL2 (SO4)3
Explanation:
I wasn't taught lcm method
I only know the trial and error method
2AlBr3 + 3K2SO4 ----6KBr + Al2(SO4)3
Which statement is true about molarity and percent by mass? (3 points)
Question 4 options:
1)
Both are ratios of the amount of solute over the amount of solution.
2)
They are ratios of the dilution over the concentration.
3)
They are inversely related.
4)
Both measure dilution.
Answer:
The correct answer is - Both are ratios of the amount of solute over the amount of solution.
Explanation:
Molarity is the number of moles of a substance in 1 liter of the solution. Another unit of the concentration, weight percentage, refers to the ratio of the mass of the solute (a dissolved substance) to the mass of the solution.
Molarity is to divide moles by liters, but the convention in mass percent is to divide grams by milliliters. If you prefer to think only in terms of liters (not milliliters), then simply consider mass percent as kilograms divided by liters.
Answer:
A. Both are ratios of the amount of solute over the amount of solution.
Hope this helps! :D
Explanation: