Answer:
balanced equation mole ratio 5 2 mol NO/1 mol O2
10.00 g O2 3 1 mol O2/32.00 g O2 5 0.3125 mol O2
20.00 g NO 3 1 mol NO/30.01 g NO 5 0.6664 mol NO
actual mole ratio 5 0.6664 mol NO/0.3125 mol O2 5 2.132 mol NO/1.000 mol O2
Because the actual mole ratio of NO:O2 is larger than the balanced equation mole
ratio of NO:O2, there is an excess of NO; O2 is the limiting reactant.
Mass of NO used 5 0.3125 mol O2 3 2 mol NO/1 mol O2 5 0.6250 mol NO
0.6250 mol NO 3 30.01 g NO/1 mol NO 5 18.76 g NO
Mass of NO2 produced 5 0.6250 mol NO2 3 46.01 g NO2/1 mol NO2 5 28.76 g NO2
Excess NO 5 20.00 g NO 2 18.76 g NO 5 1.24 g N
Explanation:
Pedro adds 3.23 moles of helium to a balloon that already contained 4.51 moles of helium creating a balloon with a volume of 9.87 liters. What was the volume of the balloon before the addition of the extra gas?
Answer:
7.The answer is 2.13 because if u add 3.23 and 4.51 and the answer is 7.74 and u add 2.13 to get 9.87. 3.23 + 4.51 + 2.13 is 9.87
Explanation:
Mechanical energy is the sum of two types of energy—kinetic energy and potential energy. Which of the following is an example of an object that has kinetic energy?
Answer:
There is no picture but the one that is in motion in the picture has kinetic energy.
Explanation:
Kinetic energy is the energy of motion.
hope this helped!
what is energy?
(in your own words but keep it short)
Answer:
The capacity for doing work. It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, etc.
butanoic acid + 1-pentanol
catalyst
→ water +X
Given the equation:
To which class of organic compounds does product X belong?
1. alcohol
2. Ester
3. Ether
4. 4. alkane
Answer: X is an Esther
Explanation: alcohol and carboxylate acid forms esters
When a carboxylic acid and alcohol react then-new substance is produced from esterification and hence is called an ester. Thus, option 2 is correct.
What is esterification?Esterification is the process to make esters from carboxylic acids and alcohol in the presence of an acid catalyst (dry sulphuric acid). The -COOH group of the carboxylic acids contributes to the formation of the esters.
The esterification reactions are reversible reactions and occur at a slower pace. The reaction between an acid and alcohol is shown as:
Butanoic acid + 1-pentanol (catalyst) → water + ester
Therefore, option 2. ester is produced.
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For the reaction 2Na + 2H20 - 2NaOH + H2, what type of reaction is taking place?
O synthesis
O decomposition
O single replacement
O double replacement
How many joules are required to heat 15 grams of ice from -200⁰ to 1400⁰ C?
Answer: A heat energy of 50160 joules are required to heat 15 grams of ice from [tex]-200^{o}C[/tex] to [tex]1400^{o}C[/tex].
Explanation:
Given : mass of ice = 15 g
Convert grams into kg as follows,
[tex]1 g = 0.001 kg\\15 g = 15 g \times \frac{0.001 kg}{1 g}\\= 0.015 kg[/tex]
Initial temperature = [tex]-200^{o}C[/tex]
Final temperature = [tex]1400^{o}C[/tex]
Formula used to calculate the amount of heat energy is as follows.
[tex]q = m \times C \times (T_{2} - T_{1})[/tex]
where,
q = heat energy
m = mass of substance
C = specific heat of substance (ice here has C = [tex]2090 J/kg ^{o}C[/tex])
[tex]T_{1}[/tex] = initial temperature
[tex]T_{2}[/tex] = final temperature
Substitute the values into above formula as follows.
[tex]q = m \times C \times (T_{2} - T_{1})\\= 0.015 kg \times 2090 J/kg^{o}C \times [1400 - (-200)]^{o}C\\= 50160 J[/tex]
Thus, we can conclude that 50160 joules are required to heat 15 grams of ice from [tex]-200^{o}C[/tex] to [tex]1400^{o}C[/tex].
how many liters would you need to make a 1 M solution if you have 6 mol of Sodium Hydroxide
a. 3
b. 4
c. 6
d. 2
One mole of NaOH = 40g NaOH
One mole of NaOH = 40g NaOHso to prepare 1M NaOH we need to dissolve 40g NaOH in water
One mole of NaOH = 40g NaOHso to prepare 1M NaOH we need to dissolve 40g NaOH in wateraccording to the given data,
One mole of NaOH = 40g NaOHso to prepare 1M NaOH we need to dissolve 40g NaOH in wateraccording to the given data,we have 6 moles of NaOH so we need 6 litres of Water olto prepare 1M Solution
Predict the reactivity of beryllium compared with magnesium give a reason for your answer use the periodic table
Answer:
Beryllium metal is relatively unreactive at room temperature, particularly in its massive form. Magnesium is more electropositive than the amphoteric beryllium and reacts more readily with most of the nonmetals.
Explanation:
When it comes to the ease with which a positive ion or cation of the metal can form, beryllium is less reactive than magnesium.
What is magnesium ?The chemical element magnesium has the atomic number 12 and the letter Mg as its symbol. It is a glossy, gray metal with a low melting point, high chemical reactivity, and a low density. It only naturally occurs in mixtures with other elements, just like the other alkaline earth metals, and it almost always has an oxidation state of +2.
At room temperature, beryllium metal is largely non-reactive, especially in its massive form. Magnesium interacts more quickly with the majority of nonmetals because it is more electropositive than amphoteric beryllium.
Due to the electron being removed being in the 3-level rather than the 2-level and being further away from the nucleus's attraction, the first ionization energy of magnesium is lower than that of beryllium.
Thus, When it comes to the ease with which a positive ion or cation of the metal can form, beryllium is less reactive than magnesium.
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Which one of the samples contains the most molecules?
o
A. 1 mol of CO2(g)
B. 1 mol of UF6(g)
O C. 1 mol CH3COOH()
D. They all have the same number of molecules
Answer: D is right
Explanation: One mole contains 6.0225 ·10^23 molecules
Despite of the substance
A substance conducts electricity because of free moving, charged particles.
what are the free moving charged particles in a :
carbon electrode(made of graphite)
molten mixture of aluminum oxide and cryolite
metal wire?
Answer:
carbon electrode: delocalised electrons
molten mixture....: aluminium oxide ions
metal wire: Metal atoms
The free moving charged particles in the following substances are as follows;
carbon electrode(made of graphite); Delocalized electrons.molten mixture of aluminum oxide and cryolite;. Aluminium ions in Aluminium oxide.Metal wire; Metal ionsGraphite, an allotrope of carbon has Delocalized (free-moving) electrons and these electrons serve to enable conductivity.
Although, cryolite is a bad conductor of electricity, when Molten Aluminium oxide and cryolite is used, the free moving Aluminium ions enable conductivity.
In metal wires, conductivity is solely the responsibility of metal ions.
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47.9 ml hrdrogen is collected at 26° Celsius and 718 torr. Find the volume occupied at STP
Answer:
The volume at STP is 41.3mL
Explanation:
To solve this question we must find the volume using the combined gas law. The equation is:
P1V1 / T1 = P2V2 / T2
Where P is pressure, V volume and T absolute temperature of 1, initial state and 2, final state of the gas.
P1 = 718torr
V1 = 47.9mL
T1 = 26°C + 273.15 = 299.15K
P2 = 760torr at STP
V2 = ?
T2 = 273.15K at STP
Replacing:
718torr*47.9mL / 299.15K = 760torr*V2 / 273.15K
41.3mL = V2
The volume at STP is 41.3mL
Which countries have a Desert biome?
Mexico
China
Ireland
India
Brazil
Saudi Arabia
United States
"Desert biome?" that's a funny way to put it. Well, the answer is most likely Mexico, United Stated, and Saudi arabia,
Mexico, Saudi Arabia and United States are countries which have a desert biome.
What is a Desert?
This is a barren area of landscape which is characterized by little precipitation and isn't best suited for plant or animal life.
Mexico, Saudi Arabia and United States all have the presence of desert biomes in some of its states.
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What is the oxidation number of each nitrogen atom (N) in calcium nitrate (Ca(NO3)2)? (3
points)
+2
+3
+5
+6
help please!!! no links
Cu + 2 AgNO3 Cu(NO3)2 + 2 Ag
How many grams of silver nitrate can be formed from 29 grams of silver?
Answer:
the answer is "a" took the test
Explanation:
Describe some of the solutions that engineers might propose for maximizing the percent yield of hydrogen from discarded wood.
A possible solution for maximizing the percentage of hydrogen in discarded wood is to design a machine that can collect more effectively all the gases and separate hydrogen from other gases.
How do people produce hydrogen using discarded wood?Discarded wood and other products can still produce important elements nitrogen, methane, and hydrogen. This is possible through combustion that releases these elements in a gas.
What is the limitation of this method?This is a new method and it is still not completely developed. Due to this, the equipment is not as efficient as one would like, for example, all gases are initially collected together but this is a problem if only one gas is needed.
Based on this, a potential solution would be to create a machine that is more efficient in collecting and separating the gases.
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An unknown gas has pressure, volume and temperature of 0.9 atm 8L and 120°C respectively. How many moles of gas are present?
Answer:
n = 0.223 mol.
Explanation:
Hello there!
In this case, according to the given information, it is possible for us to approach this problem via the ideal gas law, which involves the pressure, moles, temperature and volume of the gas:
[tex]PV=nRT\\\\[/tex]
Thus, by solving for moles we obtain:
[tex]n=\frac{PV}{RT}[/tex]
Therefore, we plug in the given volume, temperature (in Kelvins) and pressure to obtain:
[tex]n=\frac{0.9atm*8L}{0.08206\frac{atm*L}{mol*K}*(120+273)K} \\\\n=0.223mol[/tex]
Best regards!
A certain automobile contains 4 tires, 2 headlights, 1 steering wheel,
and 6 spark plugs. How many of each part will be required to build 17 of
these cars?
Answer:
143 parts I think probably not
Carbon dioxide reacts with lithium hydroxide to produce lithium carbonate and water.
What mass of lithium hydroxide would be required to react with 1.00 x 103 grams of carbon dioxide?
Answer:
1.08827 x 10^3 g.
Explanation:
The equation for the reaction is:
2LiOH + CO2 ----> Li2CO3 + H2O
Using the molar masses:
CO2 = 12.011 + 2* 16 = 44.011.
LiOH = 6.94 + 1.008 + 16 = 23.948
S0 44.011 of CO2 reacts with 2*23.948 g of LiOH
1.00 *10^3 g CO2 reacts with 2*23.948 * 1.00 *10^3 / 44.011
= 1088.27 g LiOH.
when discussing Solutions the amount of solute dissolved in the solvent is important to know as it will affect the colligative properties of a solution a pure illusion prepared by dissolving the maximum amount of solute in a given amount of solvent is best described as
I hope it helps
thanks you
The vat is made of metal. Why would it matter that the material from which the vat is made is metal ?
Answer:
Due its storing and holding ability.
Explanation:
It matter that the material from which the vat is made is metal because this vat is used for storing and holding liquids. Vat is a large container or tank that is used for storing or holding liquids in industrial sector. This vat is made of metal which increases its strength and durability. If the vat is made of wood or plastic so it can't hold huge amount of liquid or chemical due to its weak material so that's why it matters that the substance from which the vat is made is metal or not.
An empty beaker weighs 20g and when filled with
Kensene weighs 60g. If the Volume of the kerosene is 15cm2 calculate
the density of the kerosene
Answer: The density of kerosene is [tex]2.7g/cm^3[/tex]
Explanation:
Density is defined as the mass contained per unit volume.
[tex]Density=\frac{mass}{Volume}[/tex]
Given : Mass of kerosene = mass of beaker with kerosene - mass of empty beaker = 60 g - 20 g = 40 g
Volume of kersone = [tex]15cm^3[/tex]
Putting in the values we get:
[tex]Density=\frac{40g}{15cm^3}[/tex]
[tex]Density=2.7g/cm^3[/tex]
Thus the density of kerosene is [tex]2.7g/cm^3[/tex]
3 If methane burns in a poor supply of air it will give carbon monoxide and water instead. See if you can write a balanced equation to show this.
Answer: CH4 + 1,5 O2 ⇒ CO + 2 H2O, then multiply numbers by 2
Explanation:
Elements in Group I of the Periodic Table react with water.
Which row describes the products made in the reaction and the trend in reactivity of the elements?
Answer:
B
Explanation:
Question #1: Identify the type of Mutation below
Original
TTCGATA
TTGATA
Copy
Insertion
Substitution
Deletion
Answer:
Deletion
Explanation:
A mutation refers to a change in the DNA sequence. This means that the original sequence of bases in the DNA has been altered permanently.
There are three types of DNA mutations; base substitutions, deletions and insertions.
In the particular case of this question, the original is TTCGATA while the copy is TTGATA. If you look closely at the two, you will notice that the C has been omitted. This is an example of deletion.
.In a _____ relationship one variable increases and a second variable increases proportionally,
A. inverse relationship/inversely proportional
B. direct relationship/directly proportional
C. converse relationship/conversely proportional
Answer:
Explanation: b
Describe how crude oil is separated into fractions by fractional distillation.
Answer:
Crude oil is separated by fractional distillation. Crude oil is heated to vaporize the different hydrocarbons in a tank which is cool at the top and hot at the bottom. The vapours then rise and the different hydrocarbons condense at their specific boiling points, allowing them to be separated.
What term is used by chemists to quantitatively describe a solution in which a relatively small amount of solute is dissolved?
Is this molecule a polar or non polar?
Answer:
This is polar
Explanation:
If the arrows are of different lengths, and if they do not balance each other, the molecule is polar.
If the arrangement is asymmetrical, the molecule is polar.
Hope this helped!!!
Consider the reaction below.
HI + H2O → H30++
Which is an acid-conjugate base pair?
O HI and H20
O H2O and Hž0+
OH30+ and I
O HI and
Answer:
HI and I-
Explanation:
Hello there!
In this case, according to the acid ionization of hydroiodic acid:
[tex]HI+H_2O\rightarrow I^-+H_3O^+[/tex]
Now, since the acid, HI, results in the conjugate base, I- and the base, H2O in the conjugate acid, H3O+, it is correct to assert that the acid-conjugate base pair is HI and I-
Best regards!
The acid-conjugate base pair in the reaction above is HI and I-. Details about conjugate base can be found below.
What is a conjugate base?A conjugate base is the substance formed when an acid loses or donates its proton or hydrogen ion.
According to this question, the following reaction is given:
HI + H2O → H30+ + I-
The acid in this reaction is HI while the conjugate base is I-.
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