The number of H atoms in 3(NH₄)₂CrO₄ = 24
Further explanationThe empirical formula is the smallest comparison of atoms of compound forming elements.
A molecular formula is a formula that shows the number of atomic elements that make up a compound.
(empirical formula) n = molecular formula
Subscripts in the chemical formula indicate the number of atoms
The compound of 3(NH₄)₂CrO₄ ( 3 molecules of (NH₄)₂CrO₄ ) :
Number of H :
[tex]\tt 4\times 2(subscript)\times 3(coefficient,number~of~molecules)=24~atoms[/tex]
The number of Hydrogen (H) atoms in the compound, 3(NH₄)₂CrO₄ is 1.44×10²⁵ atoms
How to determine the mole of HMole of 3(NH₄)₂CrO₄ = 1 mole Mole of H in 3(NH₄)₂CrO₄ = 3 × 8 = 24 moles How to determine the number of atomsFrom Avogadro's hypothesis,
1 mole of H = 6.02×10²³ atoms
Therefore,
24 moles of H = 24 × 6.02×10²³
24 moles of H = 1.44×10²⁵ atoms
Thus, the number of atoms of H in 3(NH₄)₂CrO₄ is 1.44×10²⁵ atoms
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What is the correct order for this food chain?
A) grass, lion, bacteria
B) antelope, lion, grass
С) antelope, bacteria, grass
D) grass, antelope, lion
Answer:
Creo que es D) grass, antelope, lion
Explanation:
El antílope se alimenta de hierba y el león del antílope.
In an ecosystem, the correct order for the food chain is grass, antelope, lion.
What is an ecosystem?Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.There are different types of ecosystems present.
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Which of the following
happens when a substance
melts?
When a substance melts, the solid gains heat, and the motion of the particles increases (particles move faster in liquid form than in solid form).
During a lab you measure the height of your graduated cylinder as 5.75 inches. You later read that you were asked to record it in meters. Convert your measurement into meters in order to get full credit on your lab. Express your answer in scientific notation.
Answer:
1.4605 x [tex]10^{-1}[/tex] meter.
Explanation:
According to the standard method of conversion of units:
1 inch = 0.0254 meter
Therefore, 5.75 inches would be:
5.75 x 0.0254
= 0.14605 meter
0.14605 meter in scientific notation would be 1.4605 x [tex]10^{-1}[/tex] meter.
Hence, the 5.75 inches height would be 1.4605 x [tex]10^{-1}[/tex] meter.
HELPPPP ASAPPPPPP WILL MARK BRAINLIST
brainstorm 5 ways you can settle an argument more effectively then restoring to a dual
here it wasnt letting my upload my answer so i screenshotted
An ion is when an atom or molecule has an electric change True or False
Answer:True
Explanation:
At which pesan pressure lowest The image shows a representation of mountains of various heights, numbered 1, 2, and 3 The plami tabeled number 4 OOOO
1 is the lowest pressure.........
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Which of these is a characteristic of warm air? (5 points)
a It transfers energy through radiation.
b Its molecules are far apart.
c It sinks due to convection.
d It cools the land below i
Answer:
B.
Explanation:
The air molecules of warm air has higher energy. It causes them to move away from each other
How many moles of argon are in 1.806 x 1024 atoms of argon?
O A. 0.3 moles
O B. 1.0 mole
O C. 3.0 moles
D. 30 moles
Answer:
3 mol Ar.
Explanation:
Divide 1.806 x 10²⁴ atoms of Ar with Avogadro's Number to find the solution.
The number of moles of argon is 1.806 x 1024 atoms of argon is option C. 3.0 moles.
How many moles of argon is in 1.806 x 1024 atoms of argon?By dividing 1.806 x 10²⁴ atoms of Ar with Avogadro's number we can get the answer.Avogadro's number is the number of atoms or molecules in one mole of a substance, equal to 6.023 × 1023.The Avogadro’s number represents the number of atoms that exist in twelve grams of carbon-12. This number represents a quantity without an associated physical dimension, so it is considered a pure number to describe a physical characteristic without dimension or explicit unit of expression.To learn more about 1.806 x 1024 atoms of argon, refer to: https://brainly.com/question/2872447
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12. Which of the following is true about the Earth's crust?
1) It floats above a layer of flowing hot magma.
2) It is the thickest layer of the Earth.
3) It is the hottest layer of the Earth.
4) It mostly consists of iron.
Answer:
It should be A. Sorry if incorrect. Hope this helps. :)
Answer:
4)I consists of mostly iron
Explanation:
This is because 1) is not correct, 2) is not correct, and 3 is not correct.
?
How many protons, neutrons, and electrons does the following isotope have:
10 protons, 2 neutrons, 4 electrons
4 protons, 6 neutrons, 10 electrons
O
6
protons, 4 neutrons, 0 electrons
4 protons, 2 neutrons, 4 electrons
Answer:
D. 4 protons 2 neutrons and 4 electrons
Which statement best describes the position of a coastal area during a low
tide?
A. It is on a side of Earth that is perpendicular to the Moon.
B. It is on the part of Earth that is experiencing nighttime.
C. It is on the part of Earth that is experiencing daylight.
D. It is on a side of Earth that faces the Moon directly.
Answer:
A is the correct answer
Explanation:
Moon pulls the ocean upwards causing tides
The position of a coastal area during a low tide is: it is on a side of Earth that is perpendicular to the Moon.
What happens during low tide?Whenever the absolute bottom, or the box, arrives at a coast, the coast encounters a low tide. Envision the sea is molded like a ball pointing at the moon. The football's sharp closures address the pieces of the Earth encountering elevated tide and the ball's level sides are the pieces of the earth encountering low tide.
Thus, option A is correct.
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can someone help me with it
Answer:
false, it is theory of how the universe started
Answer:
it's answer is false you can write it
1. Two substances, both solids, start at the same temperature. You transfer
the same amount of energy into both solids, but substance 1 becomes a
liquid before substance 2. Which substance has a stronger molecular
attraction?
A Substance 1
B Substance 2
Please help I will give you Brainlyest
Answer:
B substance 2
Explanation:
1. Two substances, both solids, start at the same temperature. You transfer
the same amount of energy into both solids, but substance 1 becomes a
liquid before substance 2. Which substance has a stronger molecular
attraction?
A Substance 1
B Substance 2
Please help I will give you Brainlyest
Substance 2 has a stronger molecular attraction.
What are solids?Solid is one of the four fundamental states of matter. The molecules in a solid are closely packed together and contain the least amount of kinetic energy. A solid is characterized by structural rigidity and resistance to a force applied to the surface.
Both solids are supplied with an equal amount of energy. Out of both substances, substance 2 has a stronger molecular attraction due to which it can not easily change into a liquid while substance 1 has a lesser molecular attraction so supplying of few amounts of heat will change substance 1 into a liquid state.
Hence, Substance 2 has a stronger molecular attraction.
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Dissolved: Will give brainliest
Answer:
im 99% sure it's 175.
Explanation:
keep trucking, i know school is hard but you're doing amazing
An object that is already moving can . . .
Please help help ASAP Please help It’s do in a 1 hour What conclusion can you draw about the relationship between physical activity and a
person's pulse rate?
Answer:
During exercise, heart rate can rise dramatically, from a resting rate of 60–80 beats per minute to a maximum rate of about 200 for a young adult. While you are running, blood flow is diverted toward tissues that need it most. For example, muscles in the arteries in your legs relax to allow more blood flow.
Explanation:
Answer:
the more physical activity you do the higher your heart rate rises
Explanation:
me every time I walk more then two steps honestly
Which statement is true about endothermic and exothermic reactions
Answer:
The products have less potential energy than the reactants in an exothermic reaction.
Explanation:
took the test
Science is an attempt to explain _____________
Question 5 options:
the truth concerning all things in Science
the supernatural
superstitions
natural phenomena
Answer:
A for sure
Explanation:
Which of the following is a balanced chemical equation?
Answer:
equation number 3 is balanced.
hope it helps ☺️!
Can u guys help on 22. It will only take a min.
Answer:
Alpha > beta>gamma
Explanation:
Comparing only the three common types of ionizing radiation, alpha particles have the greatest mass. Alpha particles have approximately four times the mass of a proton or neutron and approximately 8,000 times the mass of a beta particle.
Gamma radiation, unlike alpha or beta, does not consist of any particles, instead consisting of a photon of energy being emitted from an unstable nucleus. Having no mass or charge, gamma radiation can travel much farther through air than alpha or beta, losing (on average) half its energy for every 500 feet.
Answer:
[tex]\boxed {\boxed {\sf Gamma, beta, alpha}}[/tex]
Explanation:
Alpha. beta, and gamma particles are all emitted from an unstable or radioactive nucleus during radioactive decay.
Alpha particles are essentially helium ions, made of 2 protons and 2 neutrons. It has an atomic mass of 4 atomic mass units.Beta particles are also known as electrons. They have masses of 1/1840 atomic mass units.Gamma particles are actually just rays or photons of electronegative energy emitted. They have no mass or a mass of 0 atomic mass units.So, if we place the mass in increasing order (least to greatest), then it is gamma (0 amu), beta (1/1840 amu) and alpha (4 amu).
GIVING BRAINIEST FIVE STARS AND HEART!
Please define the following term in your own words!
law of conservation of matter
Answer:
Matter cannot be created destroyed
Explanation
Matter can change form through physical and chemical changes, but through any of these changes, matter is conserved. The same amount of matter exists before and after the change—none is created or destroyed. This concept is called the Law of Conservation of Mass.
ANSWER ASAP
Which reacts with carbonates?
A. Bases only
B. Acids and bases
C. Neutral solutions
D. Acids only
Answer:
D. Acids only
Explanation:
“The allele that can only be seen when two copies of it are present”
A.Heredity
B.Dominant
C.Recessive
Answer:
Recessive
Explanation:
I don't know how to give an explanation but I learned this a few years back and it stuck with me.
A student who was training for a cross-country race jogged for 1.0 hour and covered a distance of 1.5 kilometers. How much farther will the student travel if he jogs for one more hour?
Answer:
He would travel 3 kilometers.
Explanation:
Since he had already covered 1.5 kilometers in the time of 1 hour that means if he jogged for 1 more hour assuming he is going at the same pace he would've jogged 1.5 kilometers again and when you add that to the 1.5 kilometers he started with it would add up to 3 kilometers.
The pictures above show a gerbera daisy that has experienced a change called wilting. Which of the statements below best describes what has happened from Picture A to Picture B?
Answer:
a
i just had this
Answer:
A. water entering the plant. thats the one
Explanation:
Hurry up as fast as possible Ill mark you brainlist
It took 380,000 years for electrons to be trapped in orbits around nuclei, forming the first atoms.
These were mainly helium and hydrogen, which are still by far the most abundant elements in the universe. Present observations suggest that the first stars formed from clouds of gas around 150–200 million years after the Big Bang. Heavier atoms such as carbon, oxygen and iron, have since been continuously produced in the hearts of stars and catapulted throughout the universe in spectacular stellar explosions called supernovae.
The pressure inside of a sealed syringe of hydrogen gas is 80.0KPa with a volume of 250 Liters. What is the pressure inside
of the syringe after the plunger is pulled back far enough to make final volume of the syringe 0.750 Liters? (assume the
temperature and amount of gas in the container are held constant)
Answer:
26666.67 kPaExplanation:
The new pressure can be found by using the formula for Boyle's law which is
[tex]P_1V_1 = P_2V_2[/tex]
Since we are finding the new pressure
[tex]P_2 = \frac{P_1V_1}{V_2} \\[/tex]
From the question we have
[tex]P_2 = \frac{80000 \times 250}{0.75} = \frac{20000000}{0.75} \\ = 26666666.6666 \\ = 26666667[/tex]
We have the final answer as
26666.67 kPaHope this helps you
As we approach fall, the trees begin to drop their leaves. If a leaf, with a mass of 0.00006 kg, drops 3.66 meters from the top of a tree and the acceleration due to gravity is 9.81 m/s2. Calculate the force at which the leaf will hit the ground.
(F = m * a)
Which of the following factors would reduce the yield of a reaction?
A. The reaction occurs very quickly.
B. The reactants form additional unexpected products.
C. The reaction requires a large quantity of heat.
D. The reaction produces a large quantity of heat.
Answer:
B. The reactants form additional unexpected products.
Explanation:
The 3 in the chemical formula determine -
3C6H12O6