Hexane burns in air to form carbon dioxide and water. The oxygen is store at 40.0 Celsius and at a pressure of 106.6kPa. How many moles of oxygen will react with 500. Grams of hexane
Answer: 55.233 moles of oxygen will react with 500 g of hexane.
Explanation:
To calculate the number of moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex]
Given mass of hexane = 500g
Molar mass of hexane = 86 g/mol
Putting values in above equation, we get:
[tex]\text{Moles of hexane}=\frac{500g}{86g/mol}\\\\\text{Moles of hexane}=5.814mol[/tex]
The chemical equation for the reaction of burning of hexane in air follows:
[tex]2C_6H_{14}+19O_2\rightarrow 12CO_2+14H_2O[/tex]
By stoichiometry of the reaction:
2 moles of hexane reacts with 19 moles of oxygen
So, 5.814 moles of hexane will react with = [tex]\frac{19}{2}\times 5.814=55.233moles[/tex] of oxygen
Hence, 55.233 moles of oxygen will react with 500 g of hexane.
what compound would form when magnesium and nitrogen combine
Answer:
magnesium nitride
Explanation:
Need help please can someone do these willing to give brainiest!
Explanation:
a) K(s) + I2(s) --> KI(s)
The balanced equation is;
2K(s) + I2(s) --> 2KI(s)
b) Mg(s) + Br2(l) --> MgBr2(s)
The balanced equation is;
Mg(s) + Br2(l) --> MgBr2(s)
c) KBr(aq) + AgNO3(aq) --> KNO3(aq) + AgBr(s)
The balanced equation is;
KBr(aq) + AgNO3(aq) --> KNO3(aq) + AgBr(s)
d) KClO3(s) --> KCl(s) + O2(g)
The balanced equation is;
2KClO3(s) --> 2KCl(s) + 3O2(g)
e) C2H6(g) + O2(g) --> CO2(g) + H2O(l)
The balanced equation is;
2C2H6(g) + 7O2(g) --> 4CO2(g) + 6H2O(l)
f) Al(s) + O2(g) --> Al2O3(s)
The balanced equation is;
4Al(s) + 3O2(g) --> 2Al2O3(s)
g) P4(s) + H2(g) --> PH3(g)
The balanced equation is;
P4(s) + 6H2(g) --> 4PH3(g)
Jackson enjoys looking up at the night sky and writing about the variety of objects he see , on one special occasion he wrote in his journey that he saw a streak of light going across part of the sky . Which answer best describes what Jackson saw ?
a - Meteorite: A cold mixture of dust and ice that develops a long tail as it nears the sun
b - Meteor: A cold mixture of dust and ice that develops a long tail as it nears the sun
c - Meteorite: A streak of light made when an object burns up as it enters earth’s atmosphere
d - Meteor: A streak of light made when an object burns up as it enters earth’s atmosphere
Answer:
d - Meteor: A streak of light made when an object burns up as it enters earth’s atmosphere
Explanation:
The best description of what Jackson saw is a meteor which is a streak of light made when an object burns up as it enters earth's atmosphere.
A meteor is made up of rocky and sometime iron mass. They are believed to have formed since the early formation of the earth.
These objects moves with very high velocity in the solar system. When they enter the earth's atmosphere, they are burnt up and they leave a streak of light in the atmosphere. This is what is seen as a shooting starWhich element, Sulfur or Chlorine, would have the higher first ionization energy?
Answer:
Chlorine
Explanation:
Answer:
Chlorine
Explanation:
The first Ionization energy for sodium is one and one-half times larger than the electron affinity for Chlorine. Thus, it takes more energy to remove an electron from a neutral sodium atom than is given off when the electron is picked up by a neutral chlorins atom.
4AI + 302 — 2Al2O3
In this reaction, how many grams of O2 are required to
completely react with 110 grams of Al?
Answer:
Mass = 96 g
Explanation:
Given data:
Mass of oxygen required = ?
mass of Al = 110 g
Solution:
Chemical equation:
4Al + 3O₂ → 2Al₂O₃
Number of moles of Al:
Number of moles = mass/molar mass
Number of moles = 110 g/ 27 g/mol
Number of moles = 4 mol
Now we will compare the moles of Al and oxygen.
Al : O₂
4 : 3
Mass of oxygen:
Mass = number of moles × molar mass
Mass = 3 mol × 32 g/mol
Mass = 96 g
After the nuclear plant in Japan failed in 2011, nuclear waste was released into the surrounding groundwater and ocean. How did this impact the surrounding human population?
A)The nuclear waste leaked into the ground and stayed in that location, affecting only humans who farmed or otherwise disturbed the soil.
B)The nuclear waste was not radioactive; therefore it did not affect the human population
C) The nuclear waste leaked into groundwater, and exposed humans to radiation that could potentially cause cancer.
D)The nuclear waste leaked into the sea and affected those exposed to seawater, but did not affect those on land
Answer:
C) The nuclear waste leaked into groundwater, and exposed humans to radiation that could potentially cause cancer.
Explanation:
your welcome girlies <33
The nuclear waste leaking into groundwater and exposing humans to radiation was how nuclear plant impacted the human population.
What is Nuclear plant?This is referred to a thermal power station in which the heat source is a nuclear reactor with radioactive elements.
The waste leaked into groundwater, and exposed humans to radiation that could potentially cause cancer which was how it affected the surrounding human population and why option C was chosen.
Read more about Nuclear plant here https://brainly.com/question/18784145
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Limestone CaCo3 decomposes to lime according to the equation below
CaCo3 ----> CaO + CO2
(i) balance the equation above
(ii) what mass of limestone would produce 11.2 grams of lime?
Show your working
Answer:
Mass of lime produced = 19.0 g
Explanation:
Given data:
Mass of lime produced = 11.2 g
Mass of limestone react = ?
Solution:
Chemical equation:
CaCO₃ → CaO + CO₂
Balanced chemical equation:
CaCO₃ → CaO + CO₂
Number of moles of lime:
Number of moles = mass / molar mass
Molar mass of lime 56.1 g/mol
Number of moles = 11.2 g/ 56.1 g/mol
Number of moles = 0.19 mol
Now we will compare the moles of CaO and CaCO₃ from balance chemical equation.
CaO : CaCO₃
1 : 1
0.19 : 0.19
Mass of limestone react:
Mass = number of moles × molar mass
Mass = 0.19 mol × 100.1 g/mol
Mass = 19.0 g
Which of the following is a unit of distance? JUst know im not dum nor slow.....just know.
min
miles/hr
hr
km
Answer:
km
Explanation:
Answer:
miles yryryeyeueheueueueueueyeyeyeyey
Please help!!!! The question is down below!
what 3 pieces of evidence did wegener use to support his theory
i am so confused
How are Salts formed ?
a) by the covalent bonding of neutral atoms
b) by the covalent bonding of oppositely charged ions
c) by the iconic bonding of a cation and an anion
d) by intermolecular hydrogen bonding
please get me the right answer
Answer:
I think is answer B
but you can chek
Answer:
C
Explanation:
All salts are ionic compounds. Think about NaCl. Na+ is a cation and Cl- is an anion. NaCl form an ionic compound and are then considered a salt.
what is the formulaa for H2O
Answer:
:)
Explanation:
Water (chemical formula: H2O) is a transparent fluid which forms the world's streams, lakes, oceans and rain, and is the major constituent of the fluids of organisms. As a chemical compound, a water molecule contains one oxygen and two hydrogen atoms that are connected by covalent bonds.
Answer:
H2O
Explanation:
Thats the formula :P
a,b,c, or d?
(will give brainliest)
Answer:
b
Explanation:
If you have a 17% salt solution, how much salt will need to be added to 71 mL of water?
Salt added : 14.5 g
Further explanationGiven
17% salt solution
71 ml water
Required
salt needed
Solution
%mass = (mass solute : mass solution) x 100%
71 ml water = 71 g water(density = 1 g/ml)
mass solute = x
[tex]\tt 17\%=\dfrac{x}{x+71}\times 100\%\\\\0.17(x+71)=x\\\\0.17x+12.07=x\\\\0.83x=12.07\\\\x=14.5[/tex]
What chemical bonds occur to get oxygen?
Explanation:
covalent bonds
Two covalent bonds form between the two oxygen atoms because oxygen requires two shared electrons to fill its outermost shell.
Calcium carbonate, CaCO3 (also called calcite), is the principal mineral found in limestone, marble, chalk, pearls, and the shells of marine animals such as clams. A certain sample
of calcium carbonate contain 4.86 moles. What is the mass in grams of this sample?
Answer:
486 grams
Explanation:
No of moles = mass in gram / molar mass
Mass in gram = No of moles × molar mass
Molar mass of CaCO3 = 40+12+(16*3)
= 40+12+48 = 100 amu
Mass in gram = 4.86 × 100
Mass in gram 486 grams
Step 5: Measuring the Volume of Air Near 20°C (Room Temperature) temperature of gas height of the column of gas
1. Temp of gas: 3C Height of the column of gas: 6.2cm
2. Temp of gas: 294K Volume of gas: 0.78cm3
Answer:
1. Temp of gas 21C, 6.2
2.Temp of gas 294, Volume of gas 0.78cm3
Explanation:
Just answered on Edge
Answer:
picture
Explanation:
edge 2021
why is the
equilibrium state considered dynamic ?
Answer:
Dynamic equilibrium only occurs in reversible reactions, and it's when the rate of the forward reaction is equal to the rate of the reverse reaction. These equations are dynamic because the forward and reverse reactions are still occurring, but the two rates are equal and unchanging, so they're also at equilibrium.
Answer:
By IdowShadow the cool man
Explanation:
Dynamic equilibrium only occurs in reversible reactions, and it's when the rate of the forward reaction is equal to the rate of the reverse reaction. These equations are dynamic because the forward and reverse reactions are still occurring, but the two rates are equal and unchanging, so they're also at equilibrium
What is the average speed of a cheetah that runs 9 km in 10 minutes?
Answer:
0.9m/s
hope it helps....