Answer:
number one
Explanation:
hope I helped
Why are fossil fuels considered to be a nonrenewable resources? Please help
Answer:
They're considered nonrenewable because they take millions of years to develop. They can't be renewed as fast as we're taking them.
11. How many moles of O2 can be produced by letting 12.00 moles of
KCIO3 react?
2KCIO2 → 2KCI + 30,
A. 18 mol 02
B. 36 mol 02
C. 1.5 mol 02
D. 6 mol 02
Answer:
Molarity of the solution = 0.08 M
Further explanation
Molarity is a way to express the concentration of the solution
Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution
Where
M = Molarity
n = Number of moles of solute
V = Volume of solution
0.5 lb=226,796 g
MW silver nitrat - AgNO₃ = 169,87 g/mol
mol AgNO₃ :
Molarity :
how does wind energy combined with machines cause a sailboat to move?
marking as brainliest
Answer:
The wind pushes the sails from behind, causing the boat to move forward.
Answer:
Wind energy obtained by the machine is converted into kinetic energy as it functions and thus enabling the boat to move.
Together, the forces of drag, from the water, and the pressure from the wind against the sail itself push the craft forward. Angling too sharply into the wind causes the forces on the boat to become unbalanced, and moves the boat sideways in the water.
Which does not show earths past environment?
Please hurry I need this :((
16.1 g of bromine are mixed with 8.42 g of chlorine to give an actual
yield of 21.1 g of bromine monochloride.
The question is complete, the complete question is;
16.1g of bromine are mixed with 8.42g of chlorite to give an actual yield of 21.1g of bromine monochloride.
Answer:
91 %
Explanation:
Br2 + Cl2 ------>2BrCl
Number of moles of Chlorine = 8.42/71 = 0.119 moles
If 1 mole of Cl2 yields 2 moles of BrCl
0.119 moles of Cl2 will yield 0.119 moles * 2/1 = 0.238 moles of BrCl
Number of moles of Br2 reacted = 16.1/160 = 0.1 moles
If 1 mole of Br2 yielded 2 moles of BrCl
0.1 moles of Br2 yields 0.1 * 2/1 = 0.2 moles of BrCl
Bromine is the limiting reactant.
Mass of BrCl produced = 0.2 moles * 115.357 g/mol = 23.07 g
Theoretical yield = 23.07 g
Actual yield = 21.1 g
Percentage yield = Actual yield/Theoretical yield * 100
= 21.1/23.07 * 100 = 91 %
What does water offer that attracts human settlement?
Answer:
Water is a human necessity. Therefore, it is one of the first things a human settlement would need to have. A community cannot thrive without a water source.
Answer:
Water is a basic need that is more than a necessity, humans can't survive without water for more than a period of three days, And thus having water as available, creates a tendency among humans as humans like to get everything at ease so they tend to settle near the water bodies if possible.
2 points
Stu Dent wants to create a salt water solution. He uses 0.614 moles of salt and 182 milliliters of water. What is the molarity of the solution?
Type your answer...
Answer: The molarity of solution is 3.37 M
Explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.
[tex]Molarity=\frac{n\times 1000}{V_s}[/tex]
where,
n = moles of solute = 0.614
[tex]V_s[/tex] = volume of solution in ml = 182 ml
Now put all the given values in the formula of molarity, we get
[tex]Molarity=\frac{0.614\times 1000}{182}=3.37M[/tex]
Therefore, the molarity of solution is 3.37 M
someone please help with this
Answer:
a. triple bond
b.diatomic atom
c. covalent bond
d. non polar covalent bond
e. covalent bond
f. sigma bonds
What is the electronegativity difference between oxygen and fluorine? What type of bond is this?
Answer:
Veja, por exemplo, que os elementos mais eletronegativos são os que estão no canto superior direito da tabela, isto é, o flúor (4,0) e o oxigênio (3,5), e os menos eletronegativos são os que estão no canto inferior esquerdo, que são o frâncio (0,8) e o césio (0,8).
Explanation:
How does stoichiometry work?
Answer:
stochiometry works with measuring quantitative relationships and used to determine the amount of products and reactants that are produced or needed in a reaction
Answer:
Stoichiometry is the calculation of reactants and products in chemical reactions in chemistry. Stoichiometry is founded on the law of conservation of mass where the total mass of the reactants equals.
When bonds are (broken/formed) there is a positive energy change.
Answer: Hello i am confused are you asking a question?
Explanation:
The melting point of a substance is the same as its _____ point.
evaporation
freezing
boiling
sublimation
A flask contains a mixture of hydrogen gas and water vapor at STP. If the pressure of the water vapor is 19.5 mmHg, then what is the pressure of the hydrogen gas?
779 mmHg
779 mmHg
760 mmHg
760 mmHg
81.7 mmHg
81.7 mmHg
741 mmHg
Answer:
I would say A but not sure
Explanation:
10. Lead nitrate solution mixed with sodium sulfate solution forms lead sulfate as a
precipitate.
Pb(NO3)2+ Na2SO4-
PbSO4+ 2NaNO3
In an experiment, the theoretical yield of lead sulfate for this reaction was 2.85 g.
In the experiment only 2.53 g of lead sulfate is obtained.
Calculate the percentage yield of lead sulfate in this experiment. * IT
Answer:
88%.
Explanation:
The percentage yield of lead sulfate in this experiment is 88% if 2.53 is divided by 2.85 and multiply by 100. The percentage yield can be calculated when the experimental yield is divided by theoretical yield and then multiply by 100. The percentage yield tells us about the actual yield that is gained in the end of experiment which is lower than theoretical yield.
Can someone please check my answer??!!!
Answer:
I think its correct
Gaseous ethane CH3CH3 reacts with gaseous oxygen gas O2 to produce gaseous carbon dioxide CO2 and gaseous water H2O. What is the theoretical yield of carbon dioxide formed from the reaction of 1.8g of ethane and 4.6g of oxygen gas?
Answer:
mass of CO₂ produced = 5.06 g of CO₂
Explanation:
Equation of the reaction: 2CH₃CH₃ + 5O₂ ---> 4CO₂ + 6H₂O
From the equation of the reaction, 2 moles of gaseous ethane reacts with 5 moles of oxygen gas to produce 6 moles of water.
molar mass of ethane = 30 g/mol
molar mass of oxygen gas = 32 g/mol
number of moles of ethane present in 1.8 g = 1.8/30 = 0.06 moles
number of moles of oxygen gas present in 4.6 g = 4.6/32 = 0.14375 moles
mole ratio of oxygen gas to ethane = 2.4 : 1
Therefore, oxygen is the limiting reactant
0.14375 moles of oxygen will react with 0.06 moles of ethane to produce 4/5 * 0.14375 moles of CO₂ = 0.115 moles of CO₂
molar mass of CO₂ = 44 g/mol
mass of CO₂ produced = 0.1725 * 44
mass of CO₂ produced = 5.06 g of CO₂
List the stages of the Flowering Plant Life Cycle starting with the seed
Which one do I pick?
Answer:
i would go for the 2nd as far as i know they were a big continent and an earthquake separes them all
I can't leave till I answer please help!!
Answer:
The answer is 2 all you do is divide the 6.02 and 3.01 and you get 2
What is the answer for 250 K = ? °C
Answer:
This is your answer ☺️☺️☺️
Answer:
-23.15
Explanation:
Is neon an atom or ion
PLEASE HELP ASAP!!!! WILL GIVE BRAINLIEST TO CORRECT ANSWER!!
The characteristics of a certain gas are shown below.
Characteristics of a Gas
Characteristic Description
Compound Oxygen gas
Condition STP
Mass 4.8 grams
What is the expected density of the above sample of gas?
A. 1.90 g/L
B. 1.82 g/L
C. 1.56 g/L
D. 1.43 g/L
Answer:
1.56g/L it will be as per my calculation if I am not wrong so
Answer: D: 1.43
The expected density of the given sample of oxygen gas at STP can be calculated using the ideal gas law equation:
PV = nRT
where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.
At STP, the pressure is 1 atm and the temperature is 273 K. We are given that the mass of the oxygen gas is 4.8 g. To find the number of moles of oxygen gas, we can use its molar mass, which is 32.00 g/mol:
n = mass / molar mass = 4.8 g / 32.00 g/mol = 0.15 mol
Using the molar volume of an ideal gas at STP, which is 22.4 L/mol, we can find the volume of the oxygen gas:
V = n × molar volume = 0.15 mol × 22.4 L/mol = 3.36 L
Therefore, the expected density of the given sample of oxygen gas at STP is:
density = mass / volume = 4.8 g / 3.36 L = 1.43 g/L
Therefore, the expected density of the given sample of oxygen gas at STP is 1.43 g/L.
Which of the following general trends are true for the atomic mass of elements in the periodic table?
1. The atomic mass is usually a decimal number.
II. The atomic mass is always smaller than the atomic number.
III. The atomic mass increases from top to bottom down a group.
IV. The atomic mass increases from left to right across a period.
HELP PLEASE THERE IS NO PICTURE PLZ JUST LEAVE THE ANSWER!!
Answer:
D. the atomic mass increases from left to right
Explanation:
please help me with n5 ty
and don’t waste my time if you don’t know the answer please
Thanks:)
CAn someone help me with this?
Answer:
I think D. sorry if I'm wrong:)
Which characteristics of flower petals help an angiosperm reproduce? (Select all that apply.)
Answer:
attractive smell and bright colours
True or False: Bald eagles have white heads, which is an inherited trait.
A
True
B.
False
Answer:
A true
Explanation:
Bald eagles have white heads distinguishing them from the rest of their body(which is dark brown
how to find molar mass
Answer:
Multiply the element's atomic mass by the number of atoms of that element in the compound. This will give you the relative amount that each element contributes to the compound. For hydrogen chloride, HCl, the molar mass of each element is 1.007 grams per mole for hydrogen and 35.453 grams per mole for chlorine.
What is the partial pressure of hydrogen gas in a mixture of hydrogen Nitrogen, and helium if the total pressure is 700 partial pressure is 155 mmHg, and the partial pressure of nitrogen is 265 mmHg?
PLEASE
Why don't the particles in a solid move past one another?
A. They have no motion and cannot even vibrate in place.
B. They don't have enough energy to overcome the attractions
between them.
C. They bounce off the walls of their container and back into place.
D. They move independently of one another.
Answer:
B. They don't have enough energy to overcome the attractions between them.
Answer:They don't have enough energy to overcome the attractions
between them.
Explanation:
A. They have no motion and cannot even vibrate in place.
B. They don't have enough energy to overcome the attractions
between them.
C. They bounce off the walls of their container and back into place.
D. They move independently of one another.