Answer:
Mg(OH)₂ + 2HCI → MgCI₂ + 2 H₂ O
Explanation:
How many moles of O2will be produced from 6.2 moles of water?
Answer:
I hope This will help you....and please mark me as Brilliant
Explanation:
The formula, H2O tels us that there are the same number of moles of Oxygen as there are of water. The (understood )molecular coefficient of H2O is 1. The (understood ) coefficient of O in the formula is also 1. The number of moles of oxygen is the same as the number of moles of water. This is moles of oxygen atoms. If the question wants moles of oxygen gas, O2, then it will be half as many I think that is what they want, so I would answer 3.1 moles of O2.
if a:b =2:3and b:c=6:10,find a:c.
Answer:
4:10
Explanation:
a:b
2:3
6:10
b:c
The common ratio is b
The lcm of 3 and 6 is 6.
Multiply the first ratio by 2 and the second one by 1
a:b:c
4:6:10
hence a:c = 4:10
3. An energy pyramid is shown.
Red-
The energy lost at each level is consumed by organisms in
the top level.
tailed hawks
Mexican free-tailed bats
Energy is transferred from organisms in one level to those
in the level above.
Water boatmen
Energy is transferred down each level of the energy
pyramid
Algae
Which sentence best describes how energy flows through this pyramid?
The organisms at the bottom level provide energy directly
to organisms in all the other levels.
Answer: it’s c
Explanation:
A solid has a fixed ___________________ and a fixed ____________
Answer:
Shape and volume
hope this helps
have a good day :)
Explanation:
What is the chemical equation of a covalent bond
Answer:
In my knowledge of chemistry, I believe there isn't chemical equation for covalent bond. There is only covalent formula
Explanation:
4NO + 3O2 + 2H2O = 2.4 moles of NO 2.4 moles of O2 and 2.4 moles of H2O react and 2.0 moles of HNO3 are recovered from the reaction. what is the percent yield of this reaction ?
Answer:
83%
Explanation:
Percent yield is 100 times the ratio between actual yield (2.0moles HNO₃) and theoretical yield. To find theoretical yield:
As you can see in the reaction:
4NO + 3O₂ + 2H₂O → 4HNO₃
4 moles of NO are required when 3 moles of O₂ and 2 moles of H₂O reacts. As equal moles of each reactant are added, the limiting reactant is NO because is the substance that requires more moles to react.
2.4 mol NO produce 2.4 mol HNO₃-Because 4 moles of NO produce 4 moles of HNO₃. That means theoretical yield is 2.4 moles and percent yield is:
2.0 moles / 2.4 moles * 100 = 83%
i need this answer today help pls
Answer:
A. 28 days
Explanation:
Answer:
about 29.53 days
So, 28 days.
Explanation:
If you want the exact, It takes 27 days, 7 hours, and 43 minutes. Yes, i was bored so i calculated it. I'm good with astrology.
What is the new volume if a piston starts at 25ml and 900 mm Hg and the pressure decreases to 750 mm Hg?
What is the starting pressure if an inner tube starts at 40L and then the volume decreases to 30L after the pressure is increased to 20 psi
What is the starting temperature if a balloon increases from 50ml to 70ml and the final temperature was 350K?
If a bubble cools from 300K to 200K and the final volume is 18ml, what volume did it start at?
Answer:
I screenshot and expained here
https://screenshot.best/A7QIKV.lnk
Explanation:
A wooden plank has a mass of 100kg force of 20 n was used to move it what is its acceleration
Answer:
a= 0.2m/s²
Explanation:
Fnet = ma
20 = 100a (divide both sides by 100)
a = 0.2m/s²
A wooden plank has a mass of 100 kg force of 20 Nwllhave the acceleration of 0.2 m/s².
What is Acceleration ?Acceleration is the rate of change of the velocity of an object with respect to time.
Accelerations are vector quantities.
The orientation of an object's acceleration is given by the orientation of the net force acting on that object.
We know,
F= ma ,
where
F is force , M is mass , A is acceleration.For 100kg ,
20 = 100 x A
A = 20/100
A = 0.2 m/s².
Therefore, A wooden plank has a mass of 100 kg force of 20 Nwllhave the acceleration of 0.2 m/s².
leran more about Acceleration here ;
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which of the following acts as a catalyst in catalytic converters?
A. Wood
B. Metal
C. Water
D. Gas
Answer:
B. Metal
Explanation:
The catalyst used in the converter is mostly a precious metal such as platinum, palladium and rhodium. Platinum is used as a reduction catalyst and as an oxidation catalyst. Although platinum is a very active catalyst and widely used, it is very expensive and not suitable for all applications.
Hope it helps plz mark brainlist :)
Calculate the energy of interaction between a lithium ion and a magnesium ion at a distance of 4.55x10^-10 m
which of the following acts as a catalyst in catalytic converters?
A. Wood
B. Metal
C. Water
D. Gas
Answer: B. Metal
Explanation: The catalyst used in the converter is mostly a precious metal such as platinum, palladium and rhodium Hope This Helped (=^･-･^=)
How do you study things you cannot see
Answer:
For things that we can not directly observe, we can use indirect observation – which studies the consequences of an action or process. For example, we cannot see the Earth's magnetic field, but we detect it by its effect on a compass.
Describe the periodic trend in the ionization energy of elements down a group. Use the periodic table, ionization energy and your knowledge of atomic radius as evidence.
Answer:
As we move down the group it increases.
Explanation:
This is because the electrons are farther away from the nucleus and hence they are not tightly bounded.
How many kinds of horses are there in the world? Give me a real number, plz its for a magazine article!
Answer:
784
Explanation:
Answer:
784 horse breeds
Which of the following substances is a base?
5 points
a. Vinegar
b. Ammonia
c. Lemon juice
d. Distilled water
Answer:
D
Explanation:
water is used to delude just about anything
Which plate is the South American plate?
Web
D
O A D
B. A
C. B
В
D C
Answer:
C. B
Explanation:
The correct plate is showing n the green color that is of South America and is a major tectonic plate. The plate belongs to the south American continent and forms the southernmost part of the mid-Atlantic ridge. According to the plate movement, it's still moving to the west away from the Atlantic ridges due to the seafloor spreading. Has The plate has an approx area of 43,600,000 km square.
What element is represented in this model if the atomic number is 3?
A.
lithium
B.
carbon
C.
nitrogen
D.
neon
Answer:
The answer is lithium
Answer:
A. Lithium
Explanation:
Which is true of the enthalpy of a reaction?
Answer:
C. Its Value Does Not Depend On Which Reactions Are Added
Explanation:
I Just took the test
The true statement of the enthalpy of a reaction is its value does not depend on which reaction is added. The correct option is C.
What is enthalpy?
Enthalpy is a term of thermodynamics. It is the total internal energy and product of the pressure and volume of a system. It can not be calculated, but can be changed.
Thus, the correct option is C, its value does not depend on which reaction is added.
Learn more about enthalpy
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What is one advantage that proteins derived from beans have over proteins derived from red meats
Answer: B. Proteins derived from beans have less saturated fat than proteins derived from red meats.
Where is most of an atom's atomic mass?
Answer:
The nucleus contains the majority of an atom's mass because protons and neutrons are much heavier than electrons, whereas electrons occupy almost all of an atom's volume. The diameter of an atom is on the order of 10−10 m, whereas the diameter of the nucleus is roughly 10−15 m—about 100,000 times smaller.
Explanation:
Answer: Nucleus.
Explanation:
How has the atom changed since Rutherford’s Early Atomic Model?
Answer:
the atom has changed in many ways, we have found sizes, masses, electrons, neutrons, and more.
Explanation:
Instructions:
Balance chemical equations on bach side by multiplying the molecular or ionic compounds by a
coefficient.
_C3_H8
+
O2
CO2
H2O
Answer: the answer is b
Explanation:
Answer:
Explanation:
B answer
Which is the correct molar mass for the
compound aluminum carbonate, Al2(CO3)3?
Answer:
molar mass for the
compound aluminum carbonate, Al2(CO3)3
233.99 g/mol
does anybody know the answer to this?
Answer:
The answer is Conduction.
Ice cream
Air, Cone:
Heat is :
the system
The kinetic energy is
The potential energy is
:: Surroundings
:: System
.: Entering
:: Exiting
.: Increasing
:: Decreasing
Answer:
icecream-decreasing
air,cone-surounding
heat is -entering-the system
the potential energy-increasing
What do waves carry from place to place?
A Energy, but not matter
B Energy and matter
C Matter, but not energy
D
Nelther energy nor matter
In context to the question after evaluating every possible fact we conclude that waves carry energy and never carry matter, towards a dignified place to another.
This is considered true concerning all types of waves involving the sound waves, water waves, light waves, radio waves, microwaves, and x-rays. Then the correct answer for the required question is Option A.
Furthermore, there are different and distinguished types of waves. For instance
Mechanical waves: These comprises of waves that require a medium to complete the given course. Instances involve sound waves and water waves.Electromagnetic waves: These consist of wave’s generally don’t require a medium to complete a course . Instances include radio waves, microwaves, and light waves.Matter waves: These involve waves that are associated with particles such as electrons and atoms.To learn more about mechanical waves
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If using a microscope allows you to see substances in a mixture, that mixture is _____
Answer:
That means that mixture is HeteroGeneous.
Explanation:
Hope this Helps!
Rust forming on a piece of iron is an example of which of the following? *
1The natural process of decay as metallic ions age
2 A physical change because the process can be reversed
3 A chemical change because oxygen atoms from the atmosphere bonded with the iron atoms
4 A violation of the laws of physics because new mass has been created
How does living in a group help wolves?
Answer: They can hunt together.
Explanation:
Answer:
Wolves are pack animals. They live together in small groups, or families.It's a howl of support, to let the pups know that the pack is there. The other pack members tip their heads back and add their voices to the call.
Explanation: