Answers
Answer:
2Zn2+3O2 ----> 2ZnO+2SO2
Explanation:
Related Questions
How does size affect weight?
(20 points, write at least 5 sentences answer pls thx!)
Answers
Balance the chemical equation below using the smallest possible whole number stoichiometric coefficients.
Answers
The balanced chemical equation using the smallest possible whole number stoichiometric coefficients is:
[tex]3Br_{2} + I_{2} \rightarrow 2IBr_{3}[/tex]
What is a balanced equation?A balanced chemical equation is an equation in which the the moles of atoms in of elements of reactants is equal to mole of atoms of elements of the product.
The balanced chemical equation of the reaction is given below:
[tex]3Br_{2} + I_{2} \rightarrow 2IBr_{3}[/tex]
Therefore, the balanced chemical equation using the smallest possible whole number stoichiometric coefficients is given above.
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pleaaaaase helppppppppppppp ASAP
Answers
Answer:
Explanation:
a) The forward reaction is exothermic, hence when temperature is increased the equilibrium shift towards the reactants side to get rid of the excess energy. This will mean that more reactants are produced decreasing yield
b) There are a fewer number of moles of gas on the right side compared to the left side (Just count the coefficients before each compound) so a higher pressure will mean that the equilibrium will shift towards the products side in order to decrease the pressure. This will mean that more products are formed increasing yield
c) When something is powdered it's surface area to volume ratio increases. A higher surface area means that the particles around it have more area to work on so the frequency of collisions will increase increasing the rate of reaction. This is why iron is powdered.
How many moles of silver atoms are in the piece of jewelry?
Answers
so moles = (5.29 X 10^22)/ (6.02 x 10^23)
= 5.29/6.02 x 1/10
The number of moles of silver atoms in the piece of jewelry is 0.08784 moles
Here is the complete question:
Suppose a piece of jewelry contains 5.29 × 10²² atoms of silver . How many moles of silver atoms are in the piece of jewelry?
From the question,
A piece of jewelry contains 5.29 × 10²² atoms of silver.
To determine number of moles of silver atoms in the piece of jewelry,
We will use the formula
[tex]Number \ of \ moles = \frac{Number \ of \ atoms }{Avogadro's \ number}[/tex]
From the question
Number of atoms of silver = 5.29 × 10²² atoms
and
Avogadro's number = 6.022 × 10²³ atoms/mole
∴ [tex]Number \ of \ moles \ of \ silver \ atoms= \frac{5.29 \times 10^{22} }{ 6.022 \times 10^{23} }[/tex]
Number of moles of silver atoms = 0.08784 moles
Hence, the number of moles of silver atoms in the piece of jewelry is 0.08784 moles
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I don’t understand please help
Answers
Good luck
What is Heat? What is Cold?
Answers
Answer:
Heat is the process of something getting hot(temperatures going up). Cold is when something gets cold(temperature decreases).
Explanation:
A 20.0 L container at 303 K holds a mixture of two gases with a total pressure of 5.00 atm. If there are 2.00 mol of Gas A in the mixture, how many moles of Gas B are present?
Answers
P = 5.00 atm
V = 20.0 L
R = 0.08206 L atm / mol K
T = 303 K
n = (5.00 • 20.0)/(0.08206 • 303)
= 4.02 mol = A + B
A = 2.00 mol
B = 2.02 mol
The number of moles of Gas B in the gas mixture is equal to 2.00 mol.
What is the ideal gas equation?The ideal gas equation can be explained as an equation that describes the state of an ideal gas. This equation gives the product of the volume and pressure of ideal gas equal to the multiplication of the universal gas constant, absolute temperature, and moles of gas.
The mathematical form of the ideal gas equation mentioned below:
PV = nRT
Where P is the pressure, V is the volume, n is the moles, and R is the gas constant.
Given, the volume of the gas mixture, V = 500 ml = 0.5 L
The temperature of the gas mixture, T = 303 K
The pressure of the gas mixture = 5 atm
The value of gas constant, R =0.082 atmL/K mol
Substituting the values R, V, P, and T in the ideal gas law, we get:
The number of moles of the gas mixture, n = PV/RT
n = 5 ×20/(0.082 × 303)
n = 4.00 mol
The total number of moles of gas mixture = 4.00 mol
The moles of Gas A = 2.00 mol
The moles of Gas B = 4 - 2 = 2.00 mol
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What is the percent composition of hydrogen in glucose
Answers
Answer:
67%Explanation:
Thus the % composition of glucose by mass is carbon 40.0 % oxygen 53.3 % hydrogen 6.7 % in this way, the % composition by mass of any compound can be calculated provided that is formed is known.need help asap, In this reaction how many units of B are required to form 40 units of C? A+2B--->C
Answers
Answer:
80 units B
Explanation:
Equation for the reaction is given below:
A + 2B —> C
From the equation above,
2 units of B reacted to produce 1 unit to C.
Finally, we shall determine the unit of B needed to produce 40 units of C. This can be obtained as follow:
From the equation above,
2 units of B reacted to produce 1 unit to C.
Therefore, x unit of B will react to produce 40 units of C i.e
x unit of B = 2 × 40
x unit of B = 80 units
Thus, 80 units B is needed for the reaction.
Which superpower would you have for the rest of your life?
The ability to fly
Teleportation
Super speed
Super strength
Invisibility
Time travel
Or be normal and have nothing special
Answers
time travel is the best option
2H2O ---> 2H2O + O 2
Answers
Identify the type of reaction.
Al + MgSO4 = Al2(SO4)3 + Mg
Answers
Answer: its combustion
Explanation:
Which environment can occur for a short while and usually found in low level areas along rivers, lakes, and streams?
Desert
Mountain
Rainforest
Wetland
Answers
Answer:The answer is wetland or rainforest
Explanation:
It’s wetland or rainforest because its with the tropical zone and there will be no such thing as desert and mountain have those but the rainforest is with the tropic to so Goodluck with any of your test and hope this did not make sense xdd
MATch THE BOXED PLEASEEEE
Answers
Answer:
Transform = The third one
Convergent = the first one
Divergent = the second one
Explanation:
convergent: collide
transform: slide past
Balance C3H8 + O2 + CO2 + H2O
Answers
Assuming the second plus sign is a typo and was meant to be a reaction arrow, this would be the balanced equation:
C3H8 + 5O2 —> 3CO2 + 4H2O
PLEASE PLEAS HELP I REALLY NEED IT
Answers
Answer:
A i took the quiz
Explanation:
You heat water and olive oil in two separate pans for a delicious new pasta recipe. The pans are the same temperature, but only the water is boiling! Why?
A
Olive oil has weaker intermolecular forces than water. This makes the intermolecular forces in oil easier to break, and keeps the molecules stuck together in a liquid state.
B
Water has weaker intermolecular forces than olive oil. This makes the intermolecular forces easier to break, allowing the individual water molecules to separate and change to a gas.
C
Water is losing electrons more quickly than olive oil is. The electrons float to the surface of the water, and their movement allows the phase change to happen.
Answers
Answer:
I think A is the correct answer
Answer: the answer is B 100%
What is the molality of a solution containing 18.2 g HCl and 250. g of water?
Answers
Answer:
m=2.0mol/kg
Explanation:
Hello there!
In this case, according to the formula to compute molality, which requires moles of solute (HCl) and kilograms of solvent (water), we first compute the moles of the former with its molar mass as shown below:
[tex]n=\frac{18.2g}{36.46g/mol}= 0.50mol[/tex]
And then the kilograms of water:
[tex]\frac{250.g}{1000g/kg} =0.250kg[/tex]
Finally, the molality turns out to be:
[tex]m=\frac{0.50mol}{0.250kg}\\\\m=2.0mol/kg[/tex]
Best regards!
Using the periodic table, choose the more reactive nonmetal.
Te or O
Answers
Answer:
answer is TE
Explanation:
Answer:
Tellurium is more reactive than Oxygen
How can the speed of solvent molecules be slowed down?
A.by increasing the temperature
B. by increasing the surface area of the solute
C. by increasing the pressure
D. by decreasing the temperature
E. by decreasing the surface area of the solute
Answers
Answer:
D
Explanation:
When molecules absorb energy they speed up and have a more forceful collision with solute molecules.
A mixture of nitrogen and xenon gases contains nitrogen at a partial pressure of 251 mm Hg and xenon at a partial pressure of 472 mm Hg. What is the mole fraction of each gas in the mixture?
Answers
I uploaded the answer to a file hosting. Here's link:
tinyurl.com/wpazsebu
Ca3(PO4)2 + 3H2SO4 3CaSO4 + 2H3PO4.
What mass of concentrated H2SO4 (98% by mass) must be used to react completely
with 100.00 g of calcium phosphate?
Answers
Check the attached photo out...
100g
H2SO4 = 3x98x100/310 = 94.84g
used mass of h2so4x100/all mass of H2so4 = 98%
yx100/98=94.84x100/98 = 96.81.
Check the attached photo for clear answer.
What is the use of calcium phosphate?It may be used to treat conditions caused by low calcium levels such as bone loss (osteoporosis), weak bones (osteomalacia/rickets), decreased activity of the parathyroid gland (hypoparathyroidism), and certain muscle diseases (latent tetany).
Is calcium phosphate good for health?About Calcium Phosphate Supplements
It aids in healthy bone development and is crucial from infancy to adulthood. But, calcium does more than build strong bones. It's also very important for healthy digestion. Calcium aids in bile acid metabolism, excretion of fatty acids, and healthy gut microbiota.
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Who ever has the best answer to this question gets brainliest
Answers
Answer:
"Conduction from the sun heating the metal slide" is the answer
Explanation:
what are the twa parts of central nervous system ?
Answers
Answer:
The nervous system has two main parts: The central nervous system is made up of the brain and spinal cord.
Explanation:
Which of the following would be defined as an exact number?
A. bronze is 12.5% by mass tin
B. 25 ml
C. 50.00 cm
D. 1.000 liters
Answers
Chlorine and hydrogen gas react to form hydrogen chloride as shown in the following reaction Cl 2 ( g)+H 2 (g)--->2HCl (g) Given a 7.10 g sample of chlorine (MM =71.0 g/mol) , how many grams of hydrogen chloride (MM =36.5 g/mol) is produced, assuming the reaction goes to completion? a. 7.10 g 6.3.65 9 c. 5,68 g d 7.300
Answers
Answer:
it should be 7.300 sorry if I am wrong
Answer:
The answer is 115
Explanation:
Teacher walked me through it.
A chemist has a sample of 1.88 M HCl. What volume of the sample does he require to prepare 200 mL of 0.45 M HCl?
Answers
Answer: v = 200 ml · 0.45 M/ 1.88 M
Explanation: when solution is diluted, amount of substance
is same and n= c · V v1 = v2 · c2 / c1
The appropriate answer is "47.87 mL".
Given values are:
Concentration of undiluted HCl, [tex]C_1=1.88 \ M[/tex]Concentration of diluted HCl, [tex]C_2=0.45 \ M[/tex]Volume of diluted HCl, [tex]V_2=200 \ mL[/tex]By using the dilution equation, we get
→ [tex]C_1V_1=C_2V_2[/tex]
or,
→ [tex]V_1=\frac{C_2V_2}{C_1}[/tex]
By substituting the given values, we get
→ [tex]=\frac{0.45\times 200}{1.88}[/tex]
→ [tex]=\frac{90}{1.88}[/tex]
→ [tex]= 47.87 \ mL[/tex]
Thus the above answer is correct.
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120 L of C3H8 is how many grams?
Answers
Answer:
44.09562 grams
Explanation:
How many moles of chlorine atoms are there in 0.5 mol of titanium (III) chloride?
Answers
Answer:
it is your answer..... if it is helpful plzz like and comment.....
Give an example of an electrolyte
Answers
Answer: sodium chloride water solution
Explanation: Eelctrolyte contains cations and anions which can
Transfer charge
Answer:
some energy drinks like powerade or Gatorade, and some juice drinks to.
