what is the lewis dot structure for Cu2S
Answers
Answer:
LOL i belive its 200 because i did this exact same thing yesterday for homework and got it right so yeah, it should work. if it doesnt im sorry! but yeah XD sub to my yt channel too! DB_PLAYS <3
Explanation:
Related Questions
If a compound has 27.36 % Na, 1.20 % H, and 57.14% 0, with the rest being
carbon. What is the percent of carbon in the compound?
Answers
Answer:
14.3% C
Explanation:
27.36 + 1.20 + 57.14 = 85.7
100 - 85.7 = 14.3%
For the reaction 2NH3(g) + O2(g) -> 2NO(g) + 3H2O(g). The reaction is run using 824 g NH3 and excess oxygen. How many moles of NO are formed? How many moles of H2O are formed?
Answers
Answer:
Explanation:
Step One
Find the molar Mass of NH3
N = 14
3H = 3
Mass = 17
Step Two
Find the number of moles of NH3
mols = given mass / Molar Mass
given mass = 824 grams
molar mass = 17
mols = 824/17
mols = 48.47
Step Three
Find the moles of NO
Here you have to look at the balanced equation
Every 2 mols of HN3 produces 2 mols of NO
So the number of mols of NH3 = 48.47
The number of mols of NO = 48.47
Step Four
Find the mols of H2O
2 mols of NH3 produces 3 moles of H20
48.47 mols H20 produces x moles of H20
3/x = 2/48.47 Cross Multiply
2x = 3*48.47
2x = 145.41 Divide by 2
x = 145.41/2
x = 72.71 mols of water.
Identify the type of reaction and the products. Ba+O2 ->
Answers
Answer:
Explanation:
The is barium and oxygen in here
barium+ oxygen-> barium oxide
barium + oxygen -> barium peroxide
describe the relationship between the amount of C-15 and time?
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Answer:
As time increases, C-15 (Carbon) decreases. During radioactive decay, the amount of Carbon in a substance undergoes half-lives (A sample could have a half life of 1002 years, for example.) When that substance ages to that timeframe, it loses half of its mass. Then for the next half-life, it loses half of that new mass, and so on.
Your classmate is viewing a sample using high power and is about to refocus using the coarse adjustment knob. What would you recommend your classmate do and why?
Answers
Answer:
Using the coarse adjustment knob of the microscope in high power may lead to the breaking of the slide if adjusted and raised the slide too much which can damage the sample as well as the high power lens.
In this case, I would recommend using the fine adjustment knob and moving away from the end of the viewing area of the microscope so there would no collision take place. The fine adjustment will help to get a clear image.
This reaction supports the Law of Conservation of Mass (hint: is the equation balanced?):
2KOH ® K20 + H2O True or
False
Answers
Answer:
False
Explanation:
Left:
K = 2 atoms
O = 1 atoms
H = 1 atoms
Right:
K = 2 atoms
O = 1 atoms
H = 2 atoms
O = 1 atoms
As you can see both sides do not have the same amount of atoms, therefore it is not balanced.
Hope this Helps!!:)
I NEED THE ANSWER ASAP IM ON A TIMER
Answers
what is the chemical reaction that occurs during photosynthesis
Answers
Answer:
endothermic change occurs
Explanation:
photosynthesis, is an endothermic reaction in which energy is absorbed from the surrounding.
hope this helps
1. Any gentle wind is called a
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It's called a breeze
Trust me I know
how many moles of Mg is 3.5 x 10^27 atoms of Mg
Answers
mmg mmñm
Explanation:
no lo seeee123456789
Please help due today!
Answers
Answer:
the answer is b
Explanation:
You have a stomach-ache and determine that your stomach is too acidic. Which of the
following medications would you take and why? Use a model to explain your choice?
(Attach your model to the next question.)
1. weak acid
2. strong acid
3. weak base
4. strong base
Answers
Answer: you would use a weak base, as you want to combat acidity but do not want to damage your stomach. an example is tums™ which use carbon carbonate, a base.
Hope this helps, and if it did mind marking me brainliest? thanks >//-//<
What is the noble gas electron configuration for the element oxygen?
Answers
[He] 2s² 2p⁴
Explanation:
just look it up
Answer:
[He] 2s² 2p⁴.................
Balance HSO4 + ClO3 = HCl + SO3 + OH + O2
Answers
Answer:
why was my answer deleted, was it wrong?
Explanation:
Look at the graph
below.
Write a paragraph
describing a scenario
that this graph would
be true for.
Hurry & I’ll mark you brainliest GIVING POINTS TO ANYONE WHO HURRIES
Answers
Answer:
a item dropping
Explanation:
KE is movement and PE is height. As it's falling it gets KE and falls downward giving it more KE and less PE
Answer:
Explanation:
Trana make us pay for da answer smh
CO2+ H2O + hν → C6H12O6 + O2
ayudenme plisss
Answers
Answer:
This is the balanced equation I believe-
6CO2 + 6H2O → C6H12O6 + 6O2
However, that is without the HV because I’m not sure what the hv means.
c. How many grams of NH3 react completely with 75.0 grams of PbO?
Answers
Answer:
3.81 g NH3
Explanation:
friends with chemist
Sand dunes are large piles of of sand that can be found in the dessert. What causes these sand dunes to form
A. Ice
B. Wind
C. Earthquakes
D. Volcanoes
Answers
Explanation: fun fact: wind also moves rocks
alkanes,
General Formula: C, H 2n+2
Carbon Names Molecular Formula
C2H6
Ethane
Unknown No. of
Carbon (n)
Ex. If n= 2
1.If n = 4
2. If n= 5
3. If n = 7
4. If n = 8
5. If n= 9
Answers
Firstly ALKANES FORMULA IS CnH2n+2
C4H10 Butane
C5H12 Pentane
C7H16 Hectane
C8H18 Octane
C9H20 Nonane
What is the mass of the ethanol that exactly fills a 200.0 mL container? The density of ethanol is 0.8 g/mL. please help
Answers
Mass =volume x density = 200.0 mL x 0.8 g/mL= 160.0 g
A hot metal plate at 150°C has been placed in air at room temperature. Which event would most likely take place over
the next few minutes?
A. Molecules in both the metal and the surrounding air will start moving at lower speeds.
B. Molecules in both the metal and the surrounding air will start moving at higher speeds.
C. The air molecules that are surrounding the metal will slow down, and the molecules in the metal will speed up.
D. The air molecules that are surrounding the metal will speed up, and the molecules in the metal will slow down
Answers
what is the ratio of hydrogen(H) to oxygen(O) in hydrogen peroxide(H2O2)?
A 1:1
B 2:2
C 1:2
Answers
Answer: 2:2 but if simplified it’s 1:1
Explanation:
Please help- D;
.
.
.
.
.
Answers
Answer: Silicon dioxide
Explanation:
di is 2 and since oxygen is 2
TRUE OR FALSE: pH measures the amount of hydrogen or hydronium in water
Answers
Answer:
True
Explanation:
What is the ph value of neutral substance
Answers
Answer:
Acidity and alkalinity are measured using a pH scale, for which 7.0 is neutral. The lower a substance's pH (less than 7), the more acidic it is; the higher a substance's pH (greater than 7), the more alkaline it is. Average rain has a pH of about 5.6; it is slightly acidic because carbon dioxide (CO2) dissolves into it, forming weak carbonic acid. Acid rain usually has a pH between 4.2 and 4.4. The most common nitrogen-related compounds emitted into the air by human activities are nitrogen oxides. Ammonia is another nitrogen compound emitted into the atmosphere, primarily from agricultural activities and fossil fuels. Most of the nitrogen oxides released in the U.S. due to human activity are from the burning of fossil fuels associated with transportation and industry.
Explanation:
how many different bases of DNA
Answers
Answer:
four
Explanation:
adenine, thymine, guanine, and cytosine
mg+o2 balanced eaquation
Answers
Answer:
2Mg+O2=2MgO
balanced equation
hope it helps.
Answer:
Oroduct is mgo and it is balanced equation
Because both MG and o² have valence 2
The electronegative of phosphorus is
Answers
2.19
Explanation: I searched it up
I DONT NEED HELP JUST GIVING YOU GUYS THE ANSWER I TOOK THE TEST! Which statement explains how two gases at the same temperature can diffuse at different rates?
They have different molar masses but the same velocities.
Their average kinetic energies are the same, but the smaller molecules have faster velocities.
Their kinetic energies differ, but their masses are the same.
They have the same masses but different velocities.
The answer is: Their average kinetic energies are the same, but the smaller molecules have faster velocities.
Answers
The average kinetic energies of gas molecules are the same, but the smaller or lighter molecules have more velocities. Therefore, option (B) is correct.
What is average kinetic energy?The average kinetic energy of a molecule can be described as:
[tex]{\displaystyle K.E.=\frac{3}{2}kT[/tex]
Where T is temperature (K) and k is Boltzmann constant.
All molecules of a gas are identical in mass and size but they differ from gas to gas. The gas molecules are separated by large distances so that the real volume of the molecules is negligible as compared to the total volume.
The force of attraction between molecules is negligible and molecules are supposed to be moving in different directions with different velocities. The collision between gas molecules is perfectly elastic so that no energy is wasted during a collision.
Since gas molecules are moving at different velocities ao they possess different kinetic energies. The average kinetic energy is directly proportional to the temperature (Kelvin).
Learn more about average kinetic energy, here:
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How many plates is Earth made up of?
also this is science not chemistry I just couldn't find a science
Answers
Answer:
seven
Explanation:
There are major, minor and micro tectonic plates. There are seven major plates: African, Antarctic, Eurasian, Indo-Australian, North American, Pacific and South American. The Hawaiian Islands were created by the Pacific Plate, which is the world's largest plate at 39,768,522 square miles.
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