Answer:
a) Equilibrium shifts in forward direction.
Explanation:
If pressure is increased, equilibrium shifts to the side with the fewer moles of gas.
There are 4 moles of gas in the reactants and 2 moles of gas in the products.
The equilibrium will shift in the forward direction towards the products.
Hope that helps.
Answer:
A
Explanation:
If a bag of cement of mass 50 kg is acted upon by a force which produces acceleration 20m/ s calculate the force if you don't know don't answer
Answer:
F=1000kg/m/s²
Explanation:
F=ma
F=50×20
F=1000
Which statement best describes the process of Condensation___________. *
gas turns to liquid
gas turns to solid
liquid turns to gas
solid turns to gas
What is the molar mass of sodium?
11
3
45.98
23
Answer:
23
Explanation:
Answer:
23
I hope this helps!
A transformer has 90 turns in the primary coil and 9 turns in the secondary coil If the output voltage is 6 V, what is the input voltage
Answer:
60 V
Explanation:
From;
Vs/Vp = Ns/Np
Where;
Vs = voltage in the secondary coil = 6V
Vp = voltage in the primary coil= ??
Ns = number of turns in the secondary coil = 9
Np= number of turns in the primary coil = 90
6/Vp = 9/90
Vp= 90 * 6/9
Vp= 60 V
Given:
Secondary coil's voltage, [tex]V_s = 6 \ V[/tex]No. of turn in secondary coil, [tex]N_s = 9[/tex]No. of turn in primary coil, [tex]N_p = 90[/tex]As we know,
→ [tex]\frac{V_s}{V_p} = \frac{N_s}{N_p}[/tex]
or,
→ [tex]V_p = \frac{N_p\times V_s}{N_s}[/tex]
By substituting the values, we get
[tex]= \frac{90\times 6}{9}[/tex]
[tex]= \frac{300}{9}[/tex]
[tex]= 60 \ V[/tex]
Thus the above answer is correct.
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Which event was a major source of atmospheric oxygen
A. Volcanic eruptions
B. Decomposition of water
C. Outgassing
D. Photosynthesis
Please help me!
The event which was a major source of atmospheric oxygen is photosynthesis.
What is photosynthesis?Green plants and other organisms use solar energy to generate nutrition from carbon dioxide and water. Plants need the green pigment chlorophyll to perform photosynthesis, which produces oxygen as a by-product.
Volcanic eruptions is not the source of atmospheric oxygen as they harm the environment due to producing hot lava from it.Decomposition of water produces oxygen but it is not the natural source it is done by electrolysis or any other method.Outgassing is also not the source of oxygen it is only a phenomenon.Hence photosynthesis is the major source.
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Why does a star expand into a red giant?
Answer:
"Hydrogen is still available outside the core, so hydrogen fusion continues in a shell surrounding the core. The increasingly hot core also pushes the outer layers of the star outward, causing them to expand and cool, transforming the star into a red giant."
If a 40 g sample of NaCl is composed of 39.34% Sodium, how many grams of
that sample are Sodium?
Answer:
15.7g
Explanation:
mass percent=mass of element/mass of compound *100
39.34=unknown(x)/40g×100
39.34=5x/2
multiplying both sides by 2,we get
5x=78.68
devide by 5 on both sides
x=15.74g Na
What element has 8 electrons on its 3rd outermost shell
The energy transfer diagram represents the energy of a light bulb. An illustration of a very wide arrow with a light bulb at the tail labeled electrical energy ? J. The arrow breaks into a small arrow going straight labeled light energy 20 J and a much larger arrow curling away labeled heat 100 J. How much electrical energy is involved in this transformation? 60 J 80 J 100 J 120 J
Answer:
120
Explanation:
The amount of electrical energy that is involved in this transformation is 120 J. The correct option is D.
What is electrical energy?Electrical energy is the energy that is formed by converting the electric potential energy into electric energy. Energy can also be described as the transfer of electrons from one atom to another.
When heat energy and light energy are connected, then electric energy is produced. The law of conservation of energy is also applied here.
Given the Light energy (L) = 100 J
Heat energy (H) = 20 J
Electrical energy, (E) = ?
The equation to solve the electrical energy is:
E = L + H
Putting the value in the equation
E = 100 + 20 = 120
E = 120 J
Thus, the correct option is D. 120 J.
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What do carnivores do and what is another name for them? PLEASE HELP
You see an illustration of parallel horizontal lines drawn around the earth. In the geographic coordinate system of the earth which measurements are these lines used for?
Answer:
The correct option is;
a. Latitude measurement, degrees north and south
Explanation:
The lines of latitude give the measured coordinate of a location towards the north or south in relation to the equator by using a division of surface of the Earth, using 180 imaginary horizontal lines that circles the Earth from the equator to the poles, such that the equator, which is the starting point of the measurement is measured as 0, while at the poles, (north and south) the measurement are 90° each from the equator.
Create an acrostic using the letters of the word GALAXIES. Each letter must be the start of a new sentence explaing facts about galaxies.
Galaxies are...
A
L
A
X
I
E
S
Answer:
a: always ?
L: lovely:
A: all
X: dont know
I: interesting
e: everytime?
S: stars
i probably helped none
Explanation:
When a strip of zinc metal is added to a test tube of hydrochloric acid, the liquid forms bubbles, and the test tube feels hot. The bubbles are a result of the formation of hydrogen gas. What does the hot test tube indicate?
Answer:
Exothermic Reaction
Explanation:
The test tube feels hot as a result of an increase in temperature of the surroundings. This means that due to the reaction between zinc metal and hydrochloric acid, heat was released. The hot test tube indicates that this is an exothermic reaction.
Answer:
the reaction releases heat
Explanation:
Which bond below is BEST classified as nonpolar?
A) H-Cl
B ) Cl-Cl
C) H-O
D) C-O
Explanation:
The Cl-Cl bond is definitely non-polar as it forms a covalent bond with the same atom (aka same electronegativity)
B)Cl-Cl
The two atoms that form a covalent bond have the same electrical charge. For a molecule to be polar there needs to be a difference in charge of at least 0.5.
Which of these objects have potential energy?
Group of answer choices
A) a ball moving through the air
B) a ball deflating
C) a ball is someone's hand
Answer:
it's C. but the sentence is incorrect I think it should be a ball "in" someone's hand
Explanation:
cause potential energy is the energy that is stored in an object due to its position relative to some zero position. An object possesses gravitational potential energy if it is positioned at a height above (or below) the zero height.
Protactinium has 516 years of half life how many decays will it go through to become 1/64th of the substance? ,
Answer:
6 decaysExplanation:
Each half life period reduced the amount of substance by half
64 = 2⁶1/64 = (1/2)⁶So 6 of half life cycles or decays will go.
H2 gas at STP occupies 57L of space, how many moles of H2 are present?
If you initially have a gas at a pressure of 14kPa, volume of 20L, and a temperature at 205K and then I raise the pressure to 16 kPa, and increase the temperature to 350K, what is the new volume of gas? Choose the appropriate gas law and use a calculator to complete the problem.
Answer:
V₂ = 29.88 L
Explanation:
Given data:
Initial volume = 20 L
Initial pressure = 14 KPa
Initial temperature = 205 K
Final temperature = 350 K
Final volume = ?
Final pressure = 16 KPa
Formula:
P₁V₁/T₁ = P₂V₂/T₂
P₁ = Initial pressure
V₁ = Initial volume
T₁ = Initial temperature
P₂ = Final pressure
V₂ = Final volume
T₂ = Final temperature
Solution:
V₂ = P₁V₁ T₂/ T₁ P₂
V₂ = 14 KPa × 20 L × 350 K / 205 K × 16 KPa
V₂ = 98000 KPa .L. K /3280 K.KPa
V₂ = 29.88 L
which of the following moelcules have the intermolecular force called "hydrogen bonding" between the molecules?
a)H2
b)NH3
c)HCI
d)NF
Answer:A
Explanation: A hydrogen bond is two hydrogen atoms being bonded together
What do the prefixes mean?:
Kilo
Hecto
Deka
Deci
Centi
Milli
Answer:
kilo gram
hectogram
dekagram
decigram
centigram
milligram
Explanation:
What is the chemical formula of dinitrogen tetraoxide?
Group of answer choices
A. N2O4
B. N4O2
C. N2O
D. NO
Answer:
A. N204
Explanation:
Answer: N 2 O 4
Explanation: I took the test
Examine the reaction.
H2(g) + O2(g) → H2O(l)
What coefficients will balance the equation?
a. 2, 1, 2
b. 1, 2, 1
c. 1, 1, 2
d. 2, 2, 2
To calculate the atoms of an element in a given molecule, we need to multiply stoichiometry by the number that is written on the foot of that element. The correct option is option A.
What is Balanced equation?Balanced equation is the one in which the total number of atoms of a species on reactant side is equal to the total number of atoms on product side. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, displacement reaction.
The skeletal equation is
H[tex]_2[/tex](g) + O[tex]_2[/tex](g) → H[tex]_2[/tex]O(l)
The oxygen atom on reactant side is 2 while on product side it is 1, so to balance oxygen, multiply H[tex]_2[/tex]O by 2.
H[tex]_2[/tex](g) + O[tex]_2[/tex](g) → 2H[tex]_2[/tex]O(l)
The hydrogen atom on reactant side is 2 while on product side it is 4, so to balance hydrogen, multiply H[tex]_2[/tex] by 2.
2H[tex]_2[/tex](g) + O[tex]_2[/tex](g) → 2H[tex]_2[/tex]O(l)
Therefore, the correct option is option A.
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What is the rate of a reaction if the value of k is 0.01, (A) is 2 M, and (B) is 3
M?
Rate = K[A]^3[B]^2
A. 0.36 (mol/L)/s
B. 72 (mol/L)/s
C. 1.08 (mol/L)/s
D. 0.72 (mol/L)/s
Answer:
rate = 0.72 M/s
Explanation:
Given data:
Rate equation = K[A]³[B]²
Concentration of A = 2M
Concentration of B = 3M
K = 0.01
Solution:
Substituting values,
rate = 0.01M⁻⁴s⁻¹ ×[2M]³ ×[3M]²
rate = 0.72 M/s
Which of the following has the smallest radius?
Br-
I
Br
I-
Answer:
i would say the the first 1
Explanation:
How many moles in 28 grams of UO22-
Answer:
bc i said so
Explanation:
yes
Sarcasm Challenge!!
Answer the question the most sarcastic to get brainlyest!
(if max people have answered just comment your answer)
"You know should not have done that!"
Answer:
Explanation:
Omg so exited!
What is NaHCO3 = Na2CO3 + H2O + CO2 as a balanced equation?
In your own words, describe a pure substance. How can elements as well as compounds be considered pure substances.
Answer:
Pure compounds include elements and compounds where a combination of two or more pure substances is a mixture. Only one type of atom comes in the form of a pure element. Multiple atoms consist of a molecule and different atoms consist of a compound. These are all pure substances and individually.
Which of the following are not characteristics of a eukaryotic cell?
Multicellular
No nucleus
O Membrane bound organelles
Reproduce by mitosis
48. A diagram of the rock cycle is shown.
Which process accounts for the formation of horizontally layered rocks?
A compaction and cementation
B weathering and erosion
C Melting
D Cooling
Answer:
a) Compaction & Cementation
Explanation:
