Explanation:
cl2 = 50/71
mole of cl2 = 0.704
no.of molecules = mole × avagadro no.
no of molecules = 0.704× 6.022×10²³
no. of molecules = 4.23×10²³
1. For the reaction below, which change would cause the equilibrium
to shift to the right?
CH.(g) + 2H,S(g) + heat
CS,(g) + 4H,(g)
(a) Decrease the concentration of H,S.
(b) Increase the pressure on the system.
(c) Increase the temperature of the system.
(d) Increase the concentration of CS,
(e) Decrease the concentration of CH,
can someone also help me answer the rest of the questions so i can check my work thank you
Answer:
option A
decrease in the concentration will light up the reaction so it will shift to right side
What is the mass in grams of 1.204 x 1024 molecules of
hydrogen gas (Hz)?
a 14.2 g
b 6.77 g
C 4.03 g
3.45 g
If you want to make 8.00 moles of AlF₃ how many moles of F₂ will you need, using the following balanced chemical equation? 2 Al + 3 F₂ → 2 AlF₃
Answer:
You will need 12.0 moles of F₂
Explanation:
Based on the chemical equation, 2 moles of AlF₃ are produced when 3 moles of F₂ are added in an excess of Al.
Using this expression: 2mol AlF₃ = 3mol F₂ we can find the moles of F₂ as follows:
8.00 mol AlF₃ * (3mol F₂ / 2mol AlF₃) =
You will need 12.0 moles of F₂If 2 carbon atoms, underwent fusion. What element would you get?
Answer:
Two Helium atoms
If two carbon atoms underwent fusion (of 600 million kelvin) you would get two helium atoms.
Help I got only 15 minutes left
Answer:
90g
Explanation:
I hope this helps plz give brainliest ! :D
How does La Niña affect the climate of the Pacific Ocean?
1.The warm water moves toward the east.
2.The cold water sinks deeper into the ocean.
3.The ocean becomes cooler.
4.The strength of the prevailing winds decreases
The statement in which La Niña affect the climate of the Pacific Ocean is "The cold water sinks deeper into the ocean."
What is La Niña effect?La Niña is a climate phenomenon that depicts the cooling of surface ocean waters along the coast of South America's tropical west coast.
What is climateThe average weather in a certain place over a longer length of time is referred to as climate.
The jet stream moves northward and weakens across the eastern Pacific as a result of La Niña. The South experiences warmer and drier weather than usual during La Nia winters. The North and Canada are wetter and colder than the rest of the country. The seas off the Pacific coast are cooler and contain more nutrients than typical during La Niña.
Water in the eastern Pacific is colder than typical because to La Niña. El Niño might cause the water to be warmer than usual in the same place. During La Niña years, drought-stricken areas are drenched, while El Niño years are drenched.
Hence the correct option is 2.
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solid iron with copper (II) sulfate. Assume the iron will form a +2 charge on the product side. Write the balanced equation for this reaction
Answer:
hey here is the answer to your question.
Explanation:
1) Write a balanced equation for the reaction occurring. (*Iron occurs in a few different oxidation states, but I will assume we're referring to Fe(II) or Fe2+)
Fe + CuSO4 -> Cu + FeSO4
2) Calculate the number of moles of each reactant.
Fe: 1.924 g * (1 mol / 55.85 g) = 0.03455 mol Fe
CuSO4: 0.1363 L * (0.0750 mol / 1 L) = 0.01022 mol CuSO4
3) Determine the limiting reactant. Because we have fewer moles of copper(II) sulfate and are reacting both reactants in a 1:1 ratio, we will run out of copper(II) sulfate first, making it the limiting reactant.
4) Convert moles of the limiting reactant to moles and grams of product of interest.
0.01022 CuSO4 (1 mol Cu / 1 mol CuSO4 ) (63.55 g Cu / 1 mol Cu) = 0.6495 g Cu
how do I calculate the density
PLEASE HURRY. compare the reactivitys of potassium and gold metals toward water, what happens when SO2 reacts with water?? write chemical
Answer:
See Explanation
Explanation:
The reactivity of a metal towards water depends on the position of the metal in the electrochemical series. Metals that are high up in the series do react violently and spontaneously with water. Metals that are lower in the series are sometimes unreactive in water.
Hence, potassium reacts very rapidly with water to yield KOH and hydrogen gas while gold does not react with water.
SO2 react with water to form sulphuric acid hence SO2 is called an acid anhydride.
The reaction occurs in the following steps;
2SO2(g) + O2(g) ------->2SO3(g)
SO3(g) + H20(l) ------>H2SO4(aq)
i need an essay about bow water bottles are ruining the earthh please ill give u a brainly
Answer:
Explanation:
Each bottle leaks harmful chemicals into our environment along the way as it decomposes. Studies show that the toxins decomposing bottles of water leach into our environment cause a variety of health issues, including reproductive problems and cancer.
PLEASE MARK AS BRAINLIEST ANSWER
Calculate the volume (liters) of solution that can be prepared from 180. grams of K2Cr2O7 for a 0.200M solution.
Answer:
The volume of the solution is 0.305 liters.
Explanation:
Molar mass is the amount of mass that a substance contains in one mole. The molar mass of K₂Cr₂O₇ is 294 g / mole. Then you can apply the following rule of three: if by definition of molar mass 294 grams of the compound are contained in 1 mole, 180 grams are contained in how many moles?
[tex]moles=\frac{180 grams*1mole}{294 grams}[/tex]
moles= 0.61
Molarity is a measure of the concentration of a substance that is defined as the number of moles contained in a certain volume. So, the molarity of a solution is calculated by dividing the moles of the solute by the volume of the solution:
[tex]molarity=\frac{number of moles of solute}{volume}[/tex]
Molarity is expressed in units [tex]\frac{moles}{liter}[/tex].
In this case:
molarity= 2 Mnumber of moles of solute= 0.61 molesvolume= ?Replacing in the definition of molarity:
[tex]2 M=\frac{0.61 moles}{volume}[/tex]
Solving:
[tex]volume=\frac{0.61 moles}{2 M}[/tex]
volume= 0.305 liters
The volume of the solution is 0.305 liters.
7. List all of the variables that you controlled or kept the same.
Salt water
Answer:
Temperature is a common type of controlled variable. If a temperature is held constant during an experiment, it is controlled. Other examples of controlled variables could be an amount of light, using the same type of glassware, constant humidity, or duration of an experiment.
Explanation:
im I wrong on this question?
Answer:
I don't think so
Explanation:
That's what I got
The drawing below was sketched by a student who was observing cells under a microscope. The cell is classified as
A prokaryotic
B eukaryotic
C periodic
D Nucleotic
Answer:
prokaryotic
Explanation:
I got it right
Drain Cleaner has an pH of 11. What is its pOH?
Answer:
To find the pOH, simply subtract the pH from 14. In order to calculate the pOH, take the negative log of the hydroxide ion concentration.
Explanation:
Hope this helps :3
If a 1.0 mm of 10.0 NaOH normal is added to a liter of buffer repair in the NaH2O4 Which is 0.042 and Na2HPO4 which is 0.058, how much will PH change
Answer:
Explanation:
Using H-H equation for the NaH2O4/Na2HPO4 buffer:
pH = pKa + log [Na2HPO4] / [NaH2PO4]
Where pKa of this buffer is 7.198, [Na2HPO4] = 0.058M = moles [NaH2PO4] = 0.042M = moles
Replacing:
pH = 7.198 + log [0.058M] / [0.042M]
Initial pH = 7.34
Now, NaOH reacts with NaH2PO4 as follows:
NaOH + NaH2PO4 → Na2HPO4 + H2O
That means, the moles of NaOH are additional moles of Na2HPO4 and subtracted moles of NaH2PO4.
The moles of NaOH added:
1.0mm³ = 1.0x10⁻³L * (10mol / L) = 0.01 moles
NaH2PO4:
0.042mol - 0.010mol = 0.032moles
Na2HPO4:
0.058mol + 0.010mol = 0.068moles
Replacing in H-H equation:
pH = 7.198 + log [0.068M] / [0.032M]
Final pH = 7.53
Change in pH = 7.53 - 7.34
The change in pH is 0.19 units
which of the following
groups of elements are all
metallic
Answer:
metallic element are those ones from group 1 to group 3
your answer would be - aluminum, copper, potassium
(even though you didn't list the options)
Which of the following are physical properties?
Radioactivity
Color
Temperature
Flammability
Texture
Reactivity
Answer:
Explanation:
The properties that are observed or measured without changing the composition of matter are called physical properties.
color, Temperature, Texture are the physical properties as the composition of matter remains the same.
On the other hand, Radioactivity, Flammability and Reactivity comes under chemical property as during the chemical reactions there might be some changes in the properties.
On a separate page, describe the advantages and disadvantages of the model of human homeostasis used in gizmo . In what way is the model realistic ? What factors are no included in the model PLEASE HELP ILL GIVE YOU BRAINLIEST please I need help
Solution :
Homeostasis of a human body refers to the ability of the body to maintain the stable internal conditions of the changing environment. It help an organism to survive.
The Human Homeostasis Gizmo helps a person to explore and see the human body adapts itself at a nearly constant temperatures in various conditions.
The advantages of the model of the human homeostasis used in the gizmo is that it can explore and predict how the human body maintains its normal condition as to approximation. One of the disadvantage is that it cannot predict the actual conditions for the survival of the organisms that it needs to maintain its body temperature or conditions.
What characteristic of the light is affected by the amplitude of the light
wave
(A) color
(B) brightness
Answer:
I think B but I'm not sure.
Answer: Amplitude of the light wave impacts brightness; the wavelength is what impacts/is associated with color.
This symbol could be the dot diagram for which element listed below?
What evidence is there that Potential energy is entering the system
Answer:
in particular 69-189 084 = 9283983
HURRY I DONT HAVE TIME
Arrange the waves from highest energy to lowest energy.
7) The mass of an electron is approximately equal to 1/1368 of the mass of
A) a positron
B) a proton
C) an alpha particle
D) a beta particle
Answer:B
Explanation:
So3+H2o→H2 So4
use the oxidation numbers to identify the nature of this reaction redox or not
This is not an redox reaction because the oxidation number of Oxygen atom is not changing.
How do you maximize the products of chemical reactions?
Answer:
1. increase the temperature
2. increase the concentration of reactants
3. increase the surface area of the reactants
4. use a catalyst
5. remove the product as it's formed
Explanation:
for a chemical reaction to take place, the bonds between atoms in the reactants are broken, the atoms rearrange and new bonds between the atoms are formed to make the products.
The reaction between solid aluminum and liquid bromine is exothermic. This reaction creates
the product aluminum bromide.
What equation includes the correct formulas and demonstrates conservation of mass?
A Al(s) + Br2(1) - AlBr3(s)
B Al(s) + Br(l) - AlBr(s)
C Al(s) + 3Br(1) - AlBr3(s)
D
2Al(s) + 3Br2(1) - 2AlBr3(s)
Answer:
correct answer is d)
Explanation:
This answer demonstrates law of conservation of mass because the mass of the products is equal to the mass of reactants with the help of the coefficients which is the process known as balancing. This answer also includes the correct formulas, as Br is a gas so it MUST be written as Br2. hope this helps:)
2Al(s) + 3Br2(1) - 2AlBr3(s) is the correct formulas and demonstrates conservation of mass.
What is Conservation of Mass?Every action has an equal and opposite response, states Newton's Third Law. This indicates that any force applied to an item will have an equal and opposite-directed response force of the same magnitude. A force pair is the collective name for these connected forces.
Each individual object will have a different force pair with each other object in systems of numerous objects where all things interact. In the case of charged particles, the charge of each object will dictate the direction of each force in the force pair.
Similar charges will cause particles to repel one another by directing their forces away from one another. With their forces pointing in the same direction, particles with opposing charges attract one another.
Therefore, 2Al(s) + 3Br2(1) - 2AlBr3(s) is the correct formulas and demonstrates conservation of mass.
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Q: What statement describes plants in northern and southern states during the summer season? During the summer, the plants in northern and southern states are at their biggest and are in full bloom. Plants in the northern and southern states experience the biggest growth during the summer. The plants in northern and southern states have little changes in the summer due to short and mild winters. The plants in the northern and southern states during the summer receive the most sunlight and experience a growth period.
Answer:
The plants in the northern and southern states during the summer receive the most sunlight and experience a growth period.
Explanation:
The plants in the northern and southern states during the summer receive the most sunlight and experience a growth period because in the summer season, plants receive more solar radiation as compared to winter season. Plant needs more solar radiation for higher growth. Photosynthesis is the process which helps the plant to produce more vegetation and this will only happens when the sunlight is high so we can say that summer season enables the plant to have more vegetative growth.
Answer: b
Explanation none
i made this up dont listen to me
If you have 250mL of an 11M solution and add enough water to dilute it to 7 M, then what is the final volume of the solution?
which has a lower freezing point oxygen or ethonal
Answer:
Ethanol
Explanation: