Answer:
None
Explanation:
There are two S=O. bonds and two S-O bonds in sulfate ion lewis structure. Sulfur atom is the center atom and four oxygen atoms are located around sulfur atom. There are no lone pairs in the last shell of sulfur atom.
Calculate the percent composition of oxygen in silicon dioxide.
Answer:
then it is 5
Explanation:
because i said it is
Which of these forces does not act over a distance?
A. Friction
B. Electric
C. Magnetic
D. Gravitational
Which type of bonding forms due to electrical attractions between oppositely charged elements
Answer:
Explanation:
Ionic bond
Ionic bond, also called electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound.
What will a balloon do to a cloth if its negatively charged
Answer:
This involves negatively charged particles (electrons) jumping to positively charged objects. When you rub the balloons against the fabric they become negatively charged. They take some of the electrons from the fabric and leave them positively charged.
Explanation:
Negative charges attract to positive charges. If a balloon is not rubbed with the wool cloth, it has an equal amount of negative to positive charges, so it will attract to a rubbed balloon. When both balloons are rubbed with the wool cloth, the both receive negative charges, so they will repel each other.
A 12.0 g sample of O2gas is inside a rigid, metal container with a volume of 5.00 L at 3.00 atm of pressure. What is the temperature of the gas?
Pleade help me! (If you guys unfortunately I am going to report you) Thank you
Find the volume of 2.40 moles of gas whose temperature is 50.0°C and whose pressure is 2.00 atm.
Which element would you predict to have the highest first ionization energy? Why?
a) neon or carbon
b) fluorine or francium
c) beryllium or strontium
d) iodine or fluorine
how would I solve this problem?
Answer:
D
Explanation:
The goal in this set up is to make sure all units cancel each other.
Since we need to go from grams to atoms, our final unit should be atoms.
Using method of elimination, let's see why other options are wrong.
A - Although 'g' is cancelled out, we are left with moles^2 / atoms
B - Although 'g' is cancelled out, we are left with moles^2 / atoms
C - Although 'mol' is cancelled out, we are left with g^2 / atoms
each side of a square is 8 by 10 metre find the area of the square
Answer and Explanation:
I believe the answer is 8
Chlorine atom
10. What does the following equation represent; 2KMnO4 -> K2MnO4 + MnO2(s)
+ O2(g) ?*
A. Oxygen turned in to carbon dioxide
B. Sulphate and lithium boiled
C. Decomposition of potassium permanganate(Heating)
D. None of the above
Answer:
C. Decomposition of potassium permanganate(Heating)
Explanation:
The equation of the reaction is given as;
2KMnO4 -> K2MnO4 + MnO2(s) + O2(g)
Reactant = 2KMnO4
Products = K2MnO4 + MnO2(s) + O2(g)
A. Oxygen turned in to carbon dioxide
Incorrect option - Oxygen is not the reactant
B. Sulphate and lithium boiled
Incorrect option - Sulphate and lithium are not part of this reaction
C. Decomposition of potassium permanganate(Heating)
Correct option - potassium permanganate decomposed to form K2MnO4 + MnO2(s) + O2(g)
D. None of the above
Incorrect option
1. If you have 5g of pennies how many dozen pennies do you have?
Answer:
15.69 dozen
Explanation:
Mass of penny = 5 g
Dozens of penny =..?
Next, we shall convert 5 g to gross. This can be obtained as follow:
3824 g = 1000 gross
Therefore,
5 g = 5 g × 1000 gross / 3824 g
5 g = 1.3075 gross
Thus, 5 g is equivalent to 1.3075 gross.
Finally, we convert 1.3075 gross to dozen. This can be obtained as follow:
1 gross = 12 dozen
Therefore,
1.3075 gross = 1.3075 gross × 12 dozen / 1 gross
1.3075 gross = 15.69 dozen
Thus, 5 g of penny is equivalent to 15.69 dozen
Single-celled organisms need a microscope to be seen...
O True
O False
Answer:
True
Explanation:
Microscope is an instrument which is used to observe small objects. There are many types of microscope with a different magnitude.
blank a long narrow Stepside value that forms the deepest part of the ocean
Answer:
The answer is a trench
what is a salient factor?
Answer:
technology is a silent factor
Explanation:
learned about it in computer class.
A reaction is expected to produce 28.3 moles of hydrogen gas. If the hydrogen is collected at 297 K and 1.08 atm, what is the volume? 305 L H2 639 L H2 948 L H2 1,240 L H2
Answer:
The correct answer is 639 L H₂
Explanation:
We use the ideal gas equation:
We have the following data:
n = 28.3 mol
T= 297 K
P= 1.08 atm
R= 0.082 L.atm/K.mol (gas constant)
We introduce the data in the gas equation to calculate the volume (V):
PV=nRT
⇒V =nRT/P = (28.3 mol x 0.082 L.atm/K.mol x 297 K)/(1.08 atm) = 638.2 L ≅ 639 L
Therefore, the correct option is 639 L H₂
Answer:
639 L H2
Explanation:
took the quiz
ur welcome
What are the
invisible lines
revealed by the
Iron fillings
surrounding a
magnet called?
Answer:
At each end of a magnet is a pole. These lines of flux (called a vector field) can not be seen by the naked eye, but they can be seen visually by using iron fillings sprinkled onto a sheet of paper or by using a small compass to trace them out.
hope it's help
#carryONlearningFe2O3 (s) + 2 Al (s) ---> 3 Fe (l) + Al2O3 (s) Based on the thermite reaction, how much aluminum oxide (Al2O3) is formed from 8.0 grams of aluminum (Al)?
Answer:
15.3 g
Explanation:
Fe₂O₃ (s) + 2Al (s) → 3Fe (l) + Al₂O₃ (s)First we convert 8.0 grams of aluminum into moles, using its molar mass:
8.0 g Al ÷ 27 g/mol = 0.30 mol AlThen we convert 0.30 moles of aluminum into moles of aluminum oxide, using the stoichiometric coefficients:
0.30 mol Al * [tex]\frac{1molAl_2O_3}{2molAl}[/tex] = 0.15 mol Al₂O₃Finally we convert 0.15 moles of Al₂O₃ into grams, using its molar mass:
0.15 mol Al₂O₃ * 102 g/mol = 15.3 g Al₂O₃A 30.0 mL aliquot of 0.0250 M HCl solution is titrated using 0.0500 M NaOH.
A) determine the volume of NaOH necessary and the pH at the equivalence point.
B) Determine the pH of the solution after 160.00 mL base is added.
Answer:
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hkgkfu
Explanation:
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i really need help, this is important to me, if not i get my harry styles tickets taken away and if that happens my life is over lol, i’m not saying it for sympathy i just REALLY need help
Explanation:
First Question
Group 18 elements. This is because the noble elements do not conduct electricity.
Second Question
Chewing in the mouth breaks food into small pieces
Third Question
How many atoms of each element are present in the molecule?
7 carbon atoms, 14 Hydrogen atoms and 1 oxygen atom
A compound and oxidant react to produce heat and a new product is what reaction
Answer:
A compound and oxidant react to produce heat and new product is chemical reaction.
How many kilograms of water must be added to 6.07 grams of oxalic acid (H2C2O4) to make a 0.025 m solution?
the symbol between two reactants in a chemical equation?
A horse weighs 240 kg. If its running at a speed of 18 m/s, what's the linear momentum of the horse
Answer: The answer is 4320
Explanation:
I got the answer correct
3. What tool do we use to measure force?
Answer:
A force meter
Hi! I need some help with this pleaseeee!!
When two objects of different temperatures are placed in contact with one another, eventually: (choose one option from below)
a) both their average kinetic energy and temperature will be the same
b) their average kinetic energy will be the same
c) neither their average kinetic energy and temperature will be the same
d) their temperature will be the same
What must be happening to the forces of attraction between particles when a change of state occurs?
Answer:
The particles need energy to overcome the attractions between them. As the liquid gets warmer more particles have sufficient energy to escape from the liquid. Eventually even particles in the middle of the liquid form bubbles of gas in the liquid.
What is the pH of a 2.0 × 10-4 M HCl solution?
Answer:
pH = 3.69
Explanation:
HCl is a strong acid. It will disscociates completely into dissoluted ions such that,
[tex][H^+]=2\times 10^{-4}\ M[/tex]
The formula for pH is given by :
[tex]pH=-log[H^+]\\\\pH=-log(2\times 10^{-4})\\\\pH=3.69[/tex]
So, the pH of the solution is 3.69.
The answer to your question is 4.
How many moles of I2 are in 8.23 moles of NaI ?
Answer: 4.12
Explanation:
we know that the given mol is 8.23 mol and they are 2NaI and I2 so we will write the equation like this.
8.23mol NaI x 1mol of I2 ÷ 2molNaI = 4.115≅ 4.12 mol of I2
we placed NaI at the bottom to cancel out with the 8.23 mol of NaI
Hi hello I need help ASAP
Determine the slope of this line
a.2.5
b.0.75
c.1
d.0.4
Answer:
so I got it wrong the first time but you should pick two points on the line such as 4,3 and 9,5. Then use the equation y^2 - y^1/ x^2 - X^1. You would get 2/5 which is D.
Explanation