Answer:
58.944 g
Explanation:
From the question given above, the following data were:
Mole of SO2 = 0.9210 mole
Mass of SO2 =?
Next, we shall determine the molar mass of SO2. This can be obtained by adding the molar mass of sulphur and oxygen together as illustrated below:
Molar mass of SO2 = 32 + (2 × 16)
= 32 + 32 = 64 g/mol
Finally, we shall determine the mass of 0.9210 mole of SO2 as follow:
Mole of SO2 = 0.9210 mole
Molar mass of SO2 = 64 g/mol
Mass of SO2 =?
Mole = mass /Molar mass
0.9210 = mass of SO2 / 64
Cross multiply
Mass of SO2 = 0.9210 × 64
Mass of SO2 = 58.944 g
Thus, the mass of SO2 is 58.944 g.
Substance A dissociates 100% in water to produce H3O+ ions while substance B dissociates 25% in water to produce OH- ions. What can be determined from this information?
A:Substance A is a strong acid and substance B is a weak base
B:Substance A is a weak acid and substance B is a strong base
C:Substance A is a strong base and substance B is a weak acid
D:Substance A is a weak base and substance B is a strong acid
Answer:
A:Substance A is a strong acid and substance B is a weak base
Explanation:
From this information, we can conclude that substance A is a strong acid and substance B is a weak base.
A strong acid is one that ionizes completely in solution. Most strong acids are usually concentrated. 100% dissociation is a complete ionization.
A weak base ionizes slightly in an aqueous solution. 25% dissociation is weak ionization.
Answer:
a
Explanation:
Magnesium nitrate, Mg(NO3)2, will decompose when heated to give a white solid and a mixture of
gases. One of the gases released is an oxide of nitrogen, X.
7.4g of anhydrous magnesium nitrate is heated until no further reaction takes place.
What mass of X is produced?
B 2.3g
C 3.05
D 4.6g
Mass of X produced : D. 4.6 g
Further explanationReaction
Decomposition of Magnesium nitrate into Magnesium oxide, Oxygen, and Nitrogen oxides
2 Mg(NO₃)₂ → 2 MgO + 4 NO₂ + O₂
mol Magnesium nitrate-Mg(NO₃)₂(MW=148,3 g/mol) :
[tex]\tt \dfrac{7.4}{148.3}=0.05[/tex]
mol ratio Mg(NO₃)₂ : NO₂ = 2 : 4, so mol NO₂ :
[tex]\tt \dfrac{4}{2}\times 0.05=0.1[/tex]
mass NO₂(MW=46 g/mol) :
[tex]\tt 0.1\times 46~g/mol=4.6~g[/tex]
.
When propane is reacted in the presence of oxygen gas, the products of this combustion reaction are: A. CO + H2O B. CO2 + H2O C. C2H4 + H2O D. CH4 + H2O
Answer:
B. CO2 + H2O
Explanation:
Propane is an hydrocarbon as it contains only v=carbon and hydrogen atoms.
Whenever an hydrocarbon reacts with oxygen or undergoes a combustion reaction, two products are always formed only,
These two products are;
Carbon dioxide (CO2) and water (H2O)
This means the correct option is option B.
Which of the following is the correct formula For aluminum oxide?
A.AIO
B.AI3O2
C.OAI
D.AI2O3
Answer:
The answers D.
Explanation:
Answer:
Its D
Explanation:
Just took the Test.
describe a habitat of giraffe or an elephant(i prefer the giraffe tho, and please make it reasonable)
Answer: Savanna, Woodland, or Grassland.
Giraffes eat new shoots and leaves, their habitat needs to have a good supply of trees -- they flock towards acacia trees in particular. Giraffes use their extremely long legs, necks and tongues to browse mainly from the thorns on the acacia tree. The tongue and the inside of the mouth are lined with tough tissue that protects against the thorns.
A scientist observes rock masses that have moved past each other in opposite horizontal directions. Which feature does the scientist observe?
Answer: strike-slip fault
Explanation:
Answer:
C; strike split
Explanation:
what’s the answer please gelp
Answer:
Option A. 1.8×10²⁴ molecules.
Explanation:
Data obtained from the question include:
Number of mole of methane = 3 moles
Number of molecules of methane =?
From Avogadro's hypothesis, we understood that 1 mole of any substance contains 6.02×10²³ molecules.
Thus, 1 mole of methane equally contains 6.02×10²³ molecules.
With the above information in mind, we can obtain the number of molecules in 3 moles of methane as follow:
1 mole of methane contains 6.02×10²³ molecules.
Therefore, 3 moles of methane will contain = 3 × 6.02×10²³ = 1.8×10²⁴ molecules.
Thus, 3 moles of methane contains 1.8×10²⁴ molecules.
which of the following explains why salt water is considered a mixture
Answer:
sal5 water = kaka
Explanation:
because i need points ty man
A group hikes from sea level to a mountain peak. Each letter in the diagram indicates a spot where the group stops to drinks boiling water. At Wich point in the hike does water have the highest point.
Answer:
oh my god i have learnt about this
Explanation:
Answer:
Point A
Explanation:
I dont know why but it was right on the test.
Which element is not conserved in this unbalanced chemical equation?
2NaOH + H2S04 - NaSO4 + 2H20
Ο Α. Η
O B. S
O c. O
O D. Na
In the given unbalanced reaction, the number of sodium is not balanced. There must have two sodium in the product side also. The correct formula of sodium sulphate is Na₂SO₄.
What is mass conservation law?According to the law of conservation of mass, the total mass of a system is conserved. Thus, mass can neither be created nor be destroyed. Therefore, for a chemical reaction, the total mass in the product side must be equal to the total mass in the reactant side.
The balanced equation of a chemical reaction thus, obeying the mass conservation law where, each element have to be equal in number in both sides.
In the given reaction, the number of Na in reactant side is 2 and that in product side is 1 only. Thus total mass of sodium is not conserved. It can be corrected as Na₂SO₄ in the product side.
To find more on mass conservation, refer here:
https://brainly.com/question/13383562
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Why is NCl3 not soluble in water?
Answer:
Explanation:
NCl3 does not dissolve in water because it is a nonpolar molecule which is different with water. NCl3 is nonpolar due to the difference in electronegativities between 3 atoms of Cl and 1 atom if N2.
Answer:
A polar solute dissolves into a polar solvent and a non-polar compound dissolves into a non-polar solvent, this rule is known as "like dissolves like".
What is radioisotope?
Answer:
An unstable form of a chemical element that releases radiation as it breaks down and becomes more stable. Radioisotopes may occur in nature or be made in a laboratory. In medicine, they are used in imaging tests and in treatment.
Hope I could help!
Answer:
(RAY-dee-oh-I-suh-tope) An unstable form of a chemical element that releases radiation as it breaks down and becomes more stable. Radioisotopes may occur in nature or be made in a laboratory. In medicine, they are used in imaging tests and in treatment. Also called radionuclide.
Explanation:
Hydrogen bond is not formed by 1) oxygen 2) nitrogen 3) chlorine
PLEASE HELP!!!
Answer:
Input work is the work done on a machine as the input force acts through the input distance. This is in contrast to output work which is a force that is applied by the body or system to something else. Output work is the work done by a machine as the output force acts through the output distance.Jan 15, 2020 bahsgsh bvshgs d hg
What do you predict will happen with the
soap bubble when the bottle is placed into
the hot water?
Which of these changes to a modern lifestyle would promote the
development of more-sustainable practices in the world food system?
O A. Switching from chicken to beef
B. Eating fewer processed foods
O C. Buying tropical fruits
D. Eating fresh vegetables year-round
Eating fewer processed foods would promote the development of more-sustainable practices in the world food system.
What are Processed food?
This is the food which has undergone some degree of alteration during preparation such addition of preservatives etc.
Eating less of it will ensure that more sustainable practices in the world food system are promoted.
Read more about Processed food here https://brainly.com/question/21201084
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element x bonds with phosphate in a ratio of 3 ions of element x to 2 phosphate ions. what kind of ion does element x form?
Answer:
The kind of ion is X2+ ( where the ion is formed as a result of the loss of two valence electrons)
Explanation:
The ratio of ions of the element X to the phosphate ions is 3 to 2
So what we have as formula of these will be;
X3(PO4)2
Generally we have the phosphate ion formula as; PO4^3-
So for this formula above to be possible then the element x will have a formula of its ion X2+
Can someone help? Ill give brainliest!
Directions: count each side of the reaction then Circle yes or no if it follows the law of conservation of mass
Answer:
It does follow the law of conservation of mass.
Explanation:
You start with 4 phosphorous atoms and 6 oxygen atoms, you end with 4 phosphorous atoms and 6 oxygen atoms.
what does primary succession end with
A clam farmer has been keeping records of the water temperature and the number of clams developing from fertilized eggs. The data is recorded above.
What is the dependent variable?
What is the independent variable?
What is the optimum temperature for clam development?
Answer:
The dependent variable is the number of clams developing from fertilized eggs.
The independent variable is the water temperature
The optimum temperature for clam development is 30 degrees centigrade.
Explanation:
The graph of the number of clams developing from fertilized eggs and water temperature is attached to this answer.
The independent variable is being manipulated in an experiment. As it changes, it produces a corresponding change in the dependent variable.
Here, the water temperature is the independent variable. As it changes, the number of clams developing from fertilized eggs (dependent variable) also changes alongside.
The optimum temperature is the temperature at which the greatest number of clams developing from fertilized eggs is produced. We can see from the graph that this temperature is 30 degrees centigrade.
I have a question, about trends in the periodic table. Mostly focusing on ionization energy. From going from right to left it increases as the atom's size decreases. Can someone explain why this happens? Like why does it increase as the size decreases Thank you.
Directions: Read through each scenario and identify the independent variable, dependent variable, and the control.
Question 1
1 pts
Rob is in charge of waxing the floor at the local mall. He wants to test a new brand of floor wax called
Squeaky Clean. Rob waxes 20 floor tiles with Squeaky Clean and 20 tiles with the original wax brand.
After one week he counts the number of scratches on the floor. What is the independent variable?
number of floor scratches
brand of floor wax
20 tiles with original brand wax
Answer:
The correct answer is - brand of floor wax.
Explanation:
The independent variable is the variable or the factor in an investigation which is manipulated or change in the experiment and affects the dependent variable and produces a various result.
In this investigation, there are different brands of the floor was are the independent variable as they are changed to see the effect on the scratches on the floor on 20 tiles for each brand.
What color are the stars on the diagram with the lowest surface temperatures?
Answer:
red supergiants is the answer
For the water, what color is the oxygen molecule?
Answer:
red
1: The SCP/E-water molecule: oxygen atom (red color) and hydrogen atoms (white color).
Explanation:
configuracion electronica de aluminio
Answer:
La configuración electrónica del aluminio es: 1s² 2s² 2p⁶ 3s² 3p¹
Explanation:
El aluminio es un elemento semimetálico de número atómico Z= 13. Con el número atómico y el diagrama de Moeller se puede hallar su configuración electrónica:
1s² 2s² 2p⁶ 3s² 3p¹
Which type of stress causes fault-block mountains?
dfgasfsadfasdfasdfasdfadsf
Answer:
fsdafdsafdsafdsafdasfsagfd
Explanation:
What is the frequency of a photon with an energy of 3.38 x 10-19 J?
[tex]\huge\boxed{5.1x[tex]10^{14}[/tex]Hz}[/tex]
_____________________________________DATA:E = [tex]3.38 x 10^{-19}[/tex]
h = [tex]6.625x10^{-34}[/tex]
f = ?
_____________________________________SOLUTION:Energy of Photon is given by,
E = hf
Rearrange the equation,
f = [tex]\frac{E}{h}[/tex]
where,
E = energy
h = planck's constant
f = frequency
------------------------------------------------------------------------------------------------------------
Substitute the variable in the equation,
f = [tex]\frac{3.38x10^{-19}}{6.62x10^{-34}}[/tex]
Simplify the equation,
f = 5.10 x 10^14 Hz
_____________________________________Best Regards,'Borz'
Answer:
b. 5.10 x 10^14 Hz
Explanation:
Which statement is a testable hypothesis?
A. Beans are the best plants to use in a science fair experiment.
B. Watering bean plants with salt water will make them grow faster.
C. Bean plants will become extinct before corn plants do.
D. Everyone can grow beans given the right instructions.
please help. i’ll give brainliest if ur answer is correct
Answer:
b
Explanation:
I think B because its saying that perhaps watering with salt water would make them grow faster, you don't know yet unless tested.
Momentum is mass times
A. acceleration
B. velocity
C. distance
B. velocity
This is the answer
An isotope of Cesium -137 has a half-life of 30 years. If 1.0 g of Cesium – 137 disintegrates over a period of 60 years, how many grams of Cesium- 137 would remain?
Answer:
Explanation:
Radioactive decay follows the equation:
Ln [A] = -kt + ln [A]₀
Where [A] is amount of isotope after time t: Our incognite,
k is rate constant: ln 2 / Half-life = 0.0231 years⁻¹
t are 60 years
[A]₀ is initial amount of isotope: 1.0g
Replacing:
Ln [A] = -kt + ln [A]₀
Ln [A] = -0.0231 years⁻¹*60 years + ln 1.0g
ln [A] = -1.386
[A] = 0.25g