Answer:
1) I dont knoe
2) Poetry
Explanation:
Answer: Symbolic language is used by an author to hint at deeper meanings.
Explanation: penn foster
What is the name of this molecule?
Answer:
Pentane
Explanation:
Answer:
Hexane
Explanation:
alkane
single bonds and saturated hydrocarbon
the formula is C6H14
3. The volume of a gas is reduced from 4 L to 0.5 L while the temperature is held
constant. How does the gas pressure change?
Answer:
The new pressure is 8 times the original pressure.
Explanation:
Data obtained from the question include:
Initial volume (V1) = 4L
Final volume (V2) = 0.5L
Initial pressure (P1) = P
Final pressure (P2) =..?
The new pressure can be obtained by using the Boyle's law as shown below:
P1V1 = P2V2
P x 4 = P2 x 0.5
Divide both side by 0.5
P2 = P x 4 / 0.5
P2 = 8P
Therefore, the new pressure is 8 times the original pressure.
Balance this equation. If a coefficient of "1" is required, choose "blank" for that box.
____ CH 4 + ___ O 2 → ____ CO 2 + ____ H 2 O
Answer:
CH4 + 2O2 → CO2 + 2H2O
Explanation:
CH4 + O2 → CO2 + H2O
Left Side
C = 1
H = 4
O = 2
Right Side
C = 1
H = 2
O = 3
Ok so we'll balance the H first
CH4 + O2 → CO2 + 2H2O
Left Side
C = 1
H = 4
O = 2
Right Side
C = 1
H = 4
O = 4
Now we'll balance the O
CH4 + 2O2 → CO2 + 2H2O
Left Side
C = 1
H = 4
O = 4
Right Side
C = 1
H = 4
O = 4
In the reaction, 2K (s) + 2H2O (l) produces 2KOH (aq) produces H2 (g), which of the reactants is a solid
Answer:
k
Explanation:
2K (s) + 2H2O (l) produces 2KOH (aq) produces H2 (g),
2K (s) + 2H2O (l) --> 2KOH (aq) + H2 (g)
(s) = solid
(l) = liquid
(g) = gas
Left hand side are reactants
2K (s) + 2H2O (l)
Right hand side are products
2KOH (aq) + H2 (g)
When a cube of manganese oxide was added to a solution of hydrogen peroxide, water and oxygen were produced. Manganese oxide
was not used up in the reaction. Which of the following is likely to decrease the rate of the reaction?
Using a larger amount of solution
O Increasing the mass of the cube
O Chilling the hydrogen peroxide solution
O Smashing the cube into pieces
Answer: chilling the hydrogen peroxide solution
This will Decrease the rate of reaction
Chilling of hydrogen peroxide solution will cause a decrease in the rate of the reaction. The correct option is C.
What is rate of reaction?The reaction rate or in some other words the rate of reaction is actually the rate at which a chemical reaction takes place.
It is usually classified as proportional to the alter in product concentration per unit time and the decrease in concentration of reactant per unit time. The rates of reaction of different chemical reactions can vary.
The reaction rate is determined by the amount of the reactants, the temperature, and the catalyst.
As in the given reaction, the cube of manganese oxide was added to a solution of hydrogen peroxide, water and oxygen were produced. Manganese oxide was not used up in the reaction.
By chilling the hydrogen peroxide, the reaction will get altered as the temperature will not be appropriate for the reaction.
Thus, the correct option is C.
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ASAP PLEASE !!
What are some factors that causes the actual reaction enthalpy to vary from the accepted reaction enthalpy?
Answer:
Well, Here's some factors:
The concentrations of the reactants and the products.
The temperature of the system.
And, The partial pressures of the gases involved.
Good Luck!~
eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
Answer: c
Explanation:
their is less matter to insulate so the smaller the amount of water the easier the temperature can be changed
Kostya randomly chooses a number from 1 to 10. What is the probability he chooses a number less than 5?
A. 1/2
B. 4/9
C. 2/5
D. 3/5
Which type of fuel can only be used in certain geographic area? A. natural gas B. nuclear C. solar D. Biomass
Answer:
Solar
Explanation:
Ap e x
The type of fuel which can only be used in certain geographic area is nuclear fuel.
What is fuel?The substance which on reacting with other materials will produces energy in the form of thermal energy and heat will be known as fuels.
• Natural gas, solar energy and biogas fuel provides acceptable amount of energy which never causes harm to the environment then they all will be used in all areas.
• Nuclear fuels produces a tremendous amount of energy which has an ability to destroy many lives and environment, so it would be used only is those geographical area where no lives are living.
Hence, nuclear fuel can only be used in certain geographic area.
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What color would you expect a weak base to turn the paper?
how do you separate sand and zinc?
Answer:
By using magnet.
Explanation:
Put sand and zinc in the bowl.
Take a magnet an bring it close to the bowl.
The zinc from the sand will be attracted towards the magnet.
In this way it will be separated.
4HCl(g) + Si (s) ⇌ SiCl4 (l) + 2H2 (g) would be classified as a(n):
Answer:
it will be classical as gas
Quickly Please!!!!!!
1. How many moles of a gas are contained in a 101 liter flask at a pressure of 2.0 atm and a temperature of 600K? (R = 0.0821)
G
U
E
S
S
Answer:
[tex]n=4.1mol[/tex]
Explanation:
Hello,
In this case, we can use the ideal gas equation:
[tex]PV=nRT[/tex]
So we know the temperature, pressure and volume, therefore we can easily compute the required moles as shown below:
[tex]n=\frac{PV}{RT}=\frac{2.0atm*101L}{0.082\frac{atm*L}{mol*K}*600K} \\\\n=4.1mol[/tex]
Best regards.
Answer:
4.1 moles
Explanation:
The following data were obtained from the question.
Number of mole (n) =..?
Volume (V) = 101L
Pressure (P) = 2atm
Temperature (T) = 600K
Gas constant (R) = 0.0821atm.L/Kmol
The number of mole of the gas can be obtained by using the ideal gas equation as illustrated below:
PV = nRT
2 x 101 = n x 0.0821 x 600
Divide both side by 0.0821 x 600
n = (2x 101) / (0.0821 x 600)
n = 4.1 moles.
Therefore, the number of mole of the gas in the container is 4.1 moles
state symbol for ammonium nitrate solution (Can anyone help with this please?)
Answer:
NH^4NO^3
Explanation:
Ammonium nitrate, (NH4NO3), a salt of ammonia and nitric acid, used widely in fertilizers and explosives.
Which topic is commonly used to explain activation energy and how chemical reactions happen? reaction rate collision theory velocity distribution spontaneous reaction
Collision theory
B. in edge
The following reaction is at equilibrium. What would be the effect of adding an excess of N2 and O2?
N2 + O2 ↔ 2NO
Question 16 options:
The equilibrium will shift to the right.
The equilibrium will shift to the left.
Less product will be produced.
Twice the product will be produced.
Answer:
B
Explanation:
Which of the following samples contains the greatest number of atoms?
a. 9 mole of CO2 b. 10 moles of Xe
c. 11 moles of N2O d. 12 moles of CO
Answer:
C. 11 moles of N2O
Explanation:
A. CO2 exists as a molecular compound. The number of atoms present = 1 atom of Carbon and 2 atoms oxygen = 3 atoms * 9 = 18 atoms
B. Xe exists as an atom. Number of atoms present = 10 * 1 atom = 10 atoms
C. N20 contains 3 atoms; 2 atoms of Nitrogen and 1 atom of oxygen.
Number of atoms present = 3 * 11 = 33 atoms
D. CO contains 2 atoms, 1 each of carbon and oxygen.
Number of atoms present = 12 * 2 = 24 atoms
HELP HELP HELP HELP HELP HELP!!!!!!
Barry is 62 years old. He runs every single day. His BMI is 15. He would like to gain weight, and increase muscle in his upper body, chest, and back.
what exercise should he do?
Answer:
He should eat fruits and vegetables and also skip
balance
KClO3 ⟶ KCl + O2
Answer:
[tex]2KCl O_3 \to 2KCl + 3O_2[/tex]
Explanation:
Balance both sides.
three products of destructive distillation of coal
please answer quickly
Answer:
the three products of destructive distillation of coal are:-
1. coal gas
2. coke
3. ammonia liquor
Answer:
Coke, coal gas, gas carbon, coal tar, ammonia liquor, and coal oil.
Explanation:
Molly just started a new job. She needs to fill out a _____ so that her employer knows how much tax to take out. 1099 form tax return form W-4 form W-2 form
Answer:
The answer is "W-4 form".
Explanation:
The W-4 form is part of the Internal Revenue Service tax form, which is used to submitted by the U.S. government form the customer to information and his or her tax situation. This form informs the customer of the right amount of tax to deduct from his or her salary.
That's why she filled out a W-4 form and know-how often tax he will subtract in the payroll depending on provisions dealing, dependents, potential tax deductions, and credits, etc.
What is the molar mass of Ca(OH)2?
a
b
57.008 g/mol
74.092 g/mol
73.080 g/mol
73.088 g/mol
Ос
d
Answer: the molar mass is 74.092 g/mol
Explanation:
What are two ways drugs can increase the concentration of neurotransmitters in a synapse?
Answer:
naturally, through diet or exercise or drugs, specifically receptor antagonists
Explanation:
diet/exercise - diet is self explanatory, since a healthy diet would mean that your body would be balanced, and wouldn't struggle with producing NTs
drugs - any type of drug will mimic the behavior of NTs, but receptor antagonists specifically will increase the concentration of neurotransmitters in a synapse. Antagonists would block the receptors, and thus the NTs that were intended for the blocked space, will not have anywhere to go. As a result, the NTs will stay in the synapse, and cause an increase in the concentration of NTs.
ps: you'd have more luck asking this question in biology
If all carbon dioxide coming out of volcanoes were to remain in the atmosphere, what further effect would this have on Earth’s temperature?
The effect of carbon dioxide that is coming out of volcanoes can be global warming.
Effect of carbon dioxide:CO2 has been demonstrated to be a critical supporter of air contamination, playing a significant job in the greenhouse effect. That is on the grounds that carbon dioxide traps rays at the ground level, bringing about ground-level ozone. That keeps the earth from cooling during the evening and warms sea waters.
More carbon dioxide in the atmosphere will lead to global warming.
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The effect of carbon dioxide that is coming out of volcanoes can be global warming.
What is the effect of carbon dioxide?[tex]CO_2[/tex] has been demonstrated to be a critical supporter of air contamination, playing a significant job in the greenhouse effect.
That is on the grounds that carbon dioxide traps rays at the ground level, bringing about ground-level ozone.
That keeps the earth from cooling during the evening and warms sea waters.
More carbon dioxide in the atmosphere will lead to global warming.
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Insulin is a protein that is used by the body to regulate both carbohydrate and fat metabolism. A bottle contains 225 mL of insulin at a concentration of 30.0 mg/mL . What is the total mass of insulin in the bottle?
Answer:
13,000 mg
Explanation:
40mg for every mL so you take 40x325 to wind up with 13,000mg of insulin or 13 grams.
Main group elements have valence electrons in which suborbitals? Question 5 options: A) d and f B) s and d C) p and f D) s and p
Answer:
s and p
Explanation:
The main group elements includes elements in Groups 1-2 and Groups 13-18. Groups 1-2 on the periodic table are the s block elements which means the valence electrons are located in the s suborbital. Groups 13-18 on the periodic table are the p block elements which means the valence electrons are located in the s and p orbitals.
Which fourth-period element, X, forms the compound Lewis structure of the molecule X O 3. The X atom is central with three oxygen atoms connected by double bonds. Each oxygen atom has two lone pairs of electrons. As Br Kr Ga Ge Se
Answer:
Ga
Explanation:
The fourth period element that is able to form a compound whose lewis structure is XO3 with X as the central atom and three oxygen atoms must be an element in group thirteen in the periodic table.
Gallium is known to form a trioxo- compound in which all gallium atoms are connected to oxygen atoms via double bonds. We don't have this type of compound formed by any other atom listed among the options hence the answer given above. The compound is written as GaO3.
The central atom is a gallium atom, which has the symbol Ga.
We can arrive at this answer because:
According to the octet rule, an atom must have 8 electrons in the valence layer to achieve electrical stability.These atoms can achieve this stability through covalent or ionic bonds.According to the above question, we can state that an X atom received 6 electrons, as three oxygen atoms shared 2 atoms each with the X atom.In this case, the atom x must have 2 atoms in the valence layer, to reach 8 atoms with the bonds it made with the oxygens.Among the response options, Ga is the only one that has 2 electrons in the valence layer, being able to form bonds with oxygen.
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Round to 4 significant figures.
35.5450
Answer:
35.5450 will be rounded to 35.55
Explanation:
=35.5450
if the last digit is less than 5 then it will be ignored
=35.545
when the dropping digit is 5 then the retaining digit will increse by a factor of 1
=35.55
i hope this will help you
Answer:
35.5450 to 4 significant figures is 35.55
Hope this helps.
A person applies a force of 200 N over 1.5 m to a jack. The jack exerts a 1000-N force on a car a distance of 0.02 m. What is the efficiency rating of the jack? HINT: Use work formula first to solve for WORKout and again for WORKin...then use efficiency formula.
Answer:
The efficiency rating of the jack is 0.067.
Explanation:
We have, a person applies a force of 200 N over 1.5 m to a jack. The jack exerts a 1000-N force on a car a distance of 0.02 m.
It is required to find the the efficiency rating of the jack. It is equal to the ratio of output work to the ratio of input work. So,
[tex]\eta=\dfrac{1000\times 0.02}{200\times 1.5}\\\\\eta=0.067[/tex]
Thus, the efficiency rating of the jack is 0.067.
Ethanol, C2H5OH, is considered clean fuel because it burns in oxygen to produce carbon dioxide and water with few trace pollutants. If 325.0 g of H2O are produced during the combustion of ethanol, how many grams of ethanol were present at the beginning of the reaction?
Answer:
277.8 grams of ethanol
Explanation:
C2H5OH(l)+3O2(g)⟶2CO2(g)+3H2O(l)
It is important to understand that before we can proceed with solving any problem that has to do with stoichiometry, we must first note down the correct and balanced chemical reaction equation.
Number of moles of water formed= mass of water/ molar mass of water
Molar mass of water = 18gmol-1
Number of moles of water = 325g/18 gmol-1= 18.1 moles of water
From the balanced reaction equation;
1 mole of ethanol yields 3 moles of water
x moles of ethanol yields 18.1 moles of water
Hence;
x= 18.1 × 1 / 3 = 6.03 moles of ethanol
Molar mass of ethanol= 46.07 g/mol
Therefore mass of ethanol originally present= 6.03 moles × 46.07 g/mol = 277.8 grams of ethanol
