word equation for HgO → Hg +O2
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Related Questions
HELPPP ASAPPP
Use the element tile below to calculate the molar mass of He2 (helium gas).
2 g/mol
16.012 g/mol
8.006 g/mol
4.003 g/mol
Answers
Answer: 4.003 g/mol
Explanation:
So basically Molar mass is the atomic mass of an element and the atomic mass of Helium is 4.0026 or 4.003 g/mol
multiply the molar mass of helium (4.003) by the subscript and you have your answer!
A baker has two identical cakes except that one cake is hot, and the other cake is room temperature. He places both cakes on an ice-cold
plate. What happens? (Mark the one best answer.)
Both cakes transfer energy to the plate.
The plate transfers energy to the room temperature cake.
Neither cake transfers energy to the plate
Only the hot cake transfers energy to the plate.
Answers
Answer:
the plate gets warmer and the cake gets colder
Explanation:
my brain
Hi hello I need help ASAP
Determine the slope of this line
a.2.5
b.0.75
c.1
d.0.4
Answers
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
3. What tool do we use to measure force?
Answers
Answer:
A force meter
Does liquid detergent conduct electricity?
Answers
Answer:
Yes, it is a good conductor of electricity.
Explanation:
They allow electric particles to pass through them (the bases).
(Hope this made sense)
Calculate the percent composition of oxygen in silicon dioxide.
Answers
Answer:
then it is 5
Explanation:
because i said it is
What will a balloon do to a cloth if its negatively charged
Answers
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.
How many moles of I2 are in 8.23 moles of NaI ?
Answers
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
what is a salient factor?
Answers
Answer:
technology is a silent factor
Explanation:
learned about it in computer class.
Hey. Can someone, please help me with the following questions:
Satellites
Satellites ___________the earth.
You can see _____________ _______________ without a telescope.
An example of a man made satellite is the _____________ _____________ _____________.
The only natural satellite of the earth is the __________.
Choose from: moon, orbit, natural satellites, international space station
Planets
There are ________ planets you can see with the __________ __________.
The five planets are, _________, ___________, ___________, ___________, ___________.
The planets are part of the ___________ ___________.
Light from Saturn takes around ___________ hours to reach earth.
Choose from: 1,5, naked eye, solar system, Mercury, Venus, Mars, Jupiter, Saturn
Comets and Meteors
A _________ is a spectacular sight in the _________ sky.
They are _______ to see and could be described as giant ___________ that orbit the _______.
__________ are bits of dust and _________ that _______ up as they move through the earth’s ____________. A meteor that makes it to earth is called a ______________.
Galaxies
1. What are most of the dots of light that we see in the sky?
2. What is the name of our home galaxy?
3. What is the name of our nearest star?
4. How long does it take the light from the sun to reach the earth?
5. Can you say what some of the other dots of light in the night sky might be?
6. How many stars might there be in one galaxy?
7. What is the name of our nearest neighbor galaxy?
8. State how long it takes for the light from our neighbor galaxy to reach the earth
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5, naked eye, Mercy, Venus, Mars, Jupiter, Saturn, solar system, 1
I would need to see the choices for this section
1.Stars
2. The Milky Way
3. The sun
4.8 minutes
5. Satellites
6. 100 thousand million
7. Canis Major Dwarf Galaxy
8. 10s of thousands of years
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
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the symbol between two reactants in a chemical equation?
Answers
Hope this helps!!
When 10 grams of water completely evaporate into water vapor, the volume of the water vapor is greater than the volume of the original liquid water, but the mass remains the same. Why does the mass stay the same? Which answer is correct?
A
The temperature of the liquid water and water vapor is the same.
The temperature of the liquid water and water vapor is the same.
B
The density of the liquid water is the same as the density of the water vapor.
The density of the liquid water is the same as the density of the water vapor.
C
The number of atoms in the water vapor is equal to the number of atoms in the liquid water.
The number of atoms in the water vapor is equal to the number of atoms in the liquid water.
D
The distance between the water molecules is the same in the liquid and the vapor.
The distance between the water molecules is the same in the liquid and the vapor.
Answers
Answer: I think the answer is B or C, its kind of hard.
As the number of atoms in the water vapor is equal to the number of atoms in the liquid water. Therefore, the mass of the water remains the same.
What is evaporation?Evaporation is a process that usually happens on the surface of water or liquid and it involves the conversion of the liquid phase into the gaseous phase. This process involves a change in the state of matter of water or liquids.
When the water is completely evaporated into water vapor the density of the water vapor is less than the density of the liquid water as the vapors occupy a large volume in comparison to liquid water.
But the number of atoms in the water vapor is the same as the number of atoms in the liquid water. The mass of the water is due to the mass of the atoms.
Therefore, the mass of the water remains the same during the phase transition from liquid water to water vapors. Therefore, option (C) is correct.
Learn more about evaporation, here:
https://brainly.com/question/5019199
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What is the molar mass of the following compound: C1H3P2
Answers
What are the
invisible lines
revealed by the
Iron fillings
surrounding a
magnet called?
Answers
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
#carryONlearningHelppp me pretty please
Answers
Answer:
I think the correct answer would be the second one
each side of a square is 8 by 10 metre find the area of the square
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Answer and Explanation:
I believe the answer is 8
Pleade help me! (If you guys unfortunately I am going to report you) Thank you
Answers
Sorry if I’m wrong
9. What does C12 (g) represents?
A. Chlorine ions
B. Chlorine liquid
C. Chlorine gas
D. Chlorine atom
Answers
Answer:
chlorine gas since it exists as a diatomic molecule
1. If you have 5g of pennies how many dozen pennies do you have?
Answers
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
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
Answers
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
K(s)+H2SO4(aq)
——>_____+______
Answers
K2SO4 + H2
Reason :Potassium is highly reactive
Answer:
K2SO4 + H2 this is the reaction.
Which of these forces does not act over a distance?
A. Friction
B. Electric
C. Magnetic
D. Gravitational
Answers
Select the statements that are true about electronegativity between elements,
and their type of bond.
A. If the difference is over 1.7, an ionic bond will form.
B. If the difference in electronegativity is from 0.6 to 1.7, the bond
will be nonpolar and covalent.
C. If the difference in electronegativity is 2 to 2.5, the bond will be
nonpolar covalent.
Answers
Answer:
a
Explanation:
if the difference is over 1.7, an ionic bond will form
How many kilograms of water must be added to 6.07 grams of oxalic acid (H2C2O4) to make a 0.025 m solution?
Answers
M
a
V
a
=
M
b
V
b
M
a
= 6.77M - the initial molarity (concentration)
V
a
= 15.00 mL - the initial volume
M
b
= 1.50 M - the desired molarity (concentration)
V
b
= (15.00 + x mL) - the volume of the desired solution
(6.77 M) (15.00 mL) = (1.50 M)(15.00 mL + x )
101.55 M mL= 22.5 M mL + 1.50x M
101.55 M mL - 22.5 M mL = 1.50x M
79.05 M mL = 1.50 M
79.05 M mL / 1.50 M = x
52.7 mL = x
59.7 mL needs to be added to the original 15.00 mL solution in order to dilute it from 6.77 M to 1.50 M.
I hope this was helpful.
A mixture of large, dispersed particles.
Answers
Answer:
Colloids are mixtures in which one or more substances are dispersed as relatively large solid particles or liquid droplets throughout a solid, liquid, or gaseous medium.
Answer:
Colloids are mixtures in which one or more substances are dispersed as relatively large solid particles or liquid droplets throughout a solid, liquid, or gaseous medium.
Explanation:
I got the answer first
how would I solve this problem?
Answers
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
convert 0.881 mol N2 at STP to volume in liters
Answers
Answer:
19.7 L N2
Explanation:
The volume of the nitrogen gas at STP is equal to 19.72 L.
What is the ideal gas equation?The ideal gas equation can be defined as an equation that describes the behavior of an ideal gas. This equation gives by the product of the volume and pressure is equal to the product of the moles of gas, gas constant, and absolute temperature.
The mathematical form of the ideal gas law is given as follows:
PV = nRT
Where n is the moles, V is the volume, R is the universal gas constant and P is the pressure.
The temperature of the N₂ , T = 0° C = 273 K
The pressure of the gas at STP, P = 1 atm
The value of the universal gas constant, R = 0.082 atm L/K mol
The number of moles of N₂, n = 0.881 mol
Fill in the values n, R, P, and T in the equation, and we get:
1 × V = 0.881 × 0.082 × 273
V = 19.72 L
Learn more about ideal gas equation, here:
brainly.com/question/3637553
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What is the pH of a 2.0 × 10-4 M HCl solution?
Answers
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.
Calculate the molarity of a solution that contains 85.0 g of Zn(C2H3O2)2 in 250. mL of solution (don't forget to convert mL to L first). Round to the nearest hundredth.
Answers
Answer:
[Zn(C₂H₃O₂)₂] = 1.85M (3 sig-figs accurate to 0.01 Molar)
Explanation:
Concentration is defined as amount of solute in a specified volume of solution. That is, Concentration = mass of solute/volume of solution (solution = solute + solvent). When concentration is in terms of Molar values the essential relationship is Molarity(M) = moles solute / volume of solution in liters.
For this problem => first, convert mass of Zn(C₂H₃O₂)₂ into moles and then the volume of solution into liters. Take ratio of moles/volume of solution (L).
=> Molar Concentration = moles of Zn(C₂H₃O₂)₂ / Liters of solution
moles of Zn(C₂H₃O₂)₂ = 85.0 grams Zn(C₂H₃O₂)₂ / formula weight of Zn(C₂H₃O₂)₂ = 85.0g/183.5g·mole⁻¹ = 0.463 mole Zn(C₂H₃O₂)₂.
Volume of solution in Liters = 250ml / 1000ml/L = 0.250 liters
Molarity of Zn(C₂H₃O₂)₂ solution = 0.463 mole Zn(C₂H₃O₂)₂ /0.250 liters of solution = 1.85 Molar in Zn(C₂H₃O₂)₂
_____________
Note: The symbiology convention for 'molar solution concentration' is to place brackets around the molecular formula. That is, [Zn(C₂H₃O₂)₂] = 1.85M