Answer:
D
Explanation: d
Answer:
547g
Hope i could help ;)
4. How many moles of H, would be
produced from 47 grams of H2SO4?
2A1 +3H,504 → Al2(SO4)3 +3H2
Answer:
0.48 moles of H₂ are produced.
Explanation:
Given data:
Number of moles of H₂ produced = ?
Mass of H₂SO₄ = 47 g
Solution:
Chemical equation:
2Al + 3H₂SO₄ → Al₂(SO₄)₃ + 3H₂
Number of moles of H₂SO₄ :
Number of moles = mass/molar mass
Number of moles = 47 g/ 98 g/mol
Number of moles = 0.48 mol
Now we will compare the moles of H₂SO₄ and H₂
H₂SO₄ : H₂
3 : 3
0.48 : 0.48
Thus, 0.48 moles of H₂ are produced.
Isotopes of the same element must have the same
A. atomic number
B. mass number
C. number of nucleons
D. number of neutrons
Answer:
D. number of neutrons
Explanation:
Isotopes of the same element must have the same number of neutrons. Neutrons of an atom are the uncharged particles within the nucleus.
Isotopy is the existence of two or more atoms of the same element having the same atomic number but having different mass number due to the differences in the number of neutrons in their various nuclei.
Therefore, isotopes differs based on the number of neutrons they contain.
Answer:
D. number of neutrons
Explanation:
Two isotopes of the same element have the same number of protons in the nucleus, but differ in the number of neutrons. The nucleon number is equal to the total number of protons and neutrons in the nucleus. ... The atomic mass number A is equal to the total number of protons and neutrons.
find the product of (x+a)(x-a)
Answer:
x^2 - a^2
Explanation:
PLEASE HELP!!!
How many grams of water could be vaporized (boiled) with 4590 Joules of heat?
Answer:
6
Explanation:
HELP PLEASE!! BRAINLIEST!! 5 STARS & THANKS
Which of the following best describes what would happenif mitosis did not take place?
A.Cells would get smaller and smaller over time.
B.Body tissues would not be able to repair themselves
c.The production of gametes (reproductive cells) wouldnot occur.
D.Organisms would all be multicellular.
Answer: B
Explanation:
is cellphone is made from renewable resources * true or false
Answer:
T
Explanation:
When two objects are touching, thermal
energy transfers from...
hotter to colder substances?
Or
colder to hotter substances?
Answer:
According to the laws of thermodynamics, Molecular movements of particles will tend to move into state of lower energy and this would mean that knowing the vibrational and translational energy of complex molecules will lose and give off energy usually in the form of heat but also sound and other transferable mediums it will tend to become less energetic and this mobile indicative of colder objects, if examining the average Molecular kinetic energy and bond energies of the compounds in question.
which type of cell is shown in the diagram - a plant cell, a yeast cell or a bacterial cell
Answer:
bacterial cell plant cells dont have a tail
Explanation:
The type of cell shown in the diagram is the bacterial cell as plant cell do not have tails while bacteria have tail.
Bacteria are prokaryotic unicellular organisms. They have a relatively simple cell structure compared to eukaryotic cells. They also do not possess any membrane-bound organelles such as a nucleus. However, do they possess genetic material (DNA or RNA) in the intracellular space called the nucleoid.
Bacteria lack a membrane-bound nucleus and other internal structures and are therefore ranked among the unicellular life-forms called prokaryotes. Prokaryotes are the dominant living creatures on Earth, having been present for perhaps three-quarters of Earth history and having adapted to almost all available ecological habitats.
Learn more about bacteria,here:
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How do I know the number of molecules in a equation
Answer:
Calculate he number of moles you have by taking the Mass / molar mass. if you have 1000 grams ; then 1,000 g / 151.001 g/mol = X g moles. Then multiply by Avogadros # = 6.022140857 × 10^23 molecules per g mole. The result is the # of molecules of MnSO4.
Explanation:
Please answer 14 will give brainliest
Answer:
I think it's alkali metals
Answer:
[tex]its \: fluorine \: and \: it \: belongs \: to \ : \\ 17th \: family \: noble \: gases[/tex]
What are the steps needed to calculate the percent composition of Carbon in CH4
Brainiest:):):):):):)
Answer:
1) Condensation
2) Temperature
3) Evaporation
4) Kinetic Energy
5) Sublimation
6) Thermal Energy
What are the parts of the cell theory?Mark all that apply
Answer:
Cell theory states that cell living organisms are composed of at least one cell, which are the basic unit of life. Cells are always produced from other living cells, and cannot spontaneously generate
what does the zebra mussel do to affect the ecosystem
Answer:
The explanation of the type of situation would be characterized below.
Explanation:
Zebra mussels, therefore, have a direct as well as indirect (significant) impact on natural ecosystems. The much more significant impact is on the feed intake interaction including its mussel. Zebra mussels seem to be opportunistic feeders that analyze approximately one gallon of liquid or more per mussel.Jacob walked into a shop to buy cups for his house. He saw the cups shown below. Why does the cup on the right appear yellow? A. The cup absorbs yellow light but reflects all other colors of light. B. The cup reflects yellow light but refracts all other colors of light. C. The cup refracts yellow light but absorbs all other colors of light. D. The cup reflects yellow light but absorbs all other colors of light.
Answer:
D. The cup reflects yellow light but absorbs all other colors of light.
Explanation:
The cup in the shop appears yellow because the cup reflects yellow light but absorbs all colors of light.
Due to the materials the cup is made of, it is able to specifically reflect yellow and absorb other radiation types.
The color we see are products of the part of visible radiations they reflect.
The cup in this instance reflects yellow and absorbs other color.
I'M GIVING BRAINIEST AND I'LL RATE YOU THAANKS!!!!
How many molecules and atoms are in 0.5 moles of SO2?
Answer:
0.5 mole of a SO2 contains 3.01 into 10 ^23 molecules of So2.
Explanation:
Have a great day <3
3. How many moles of hydrogen atoms are present in 2.0 moles of ammonia
NH3?
A.3.0 mol
B. 6.0 mol
C. 8.0 mol
D. 2.0 mol
Answer:
3 I think
Explanation:
this could be because I noticed the 3 subscript by the H which is the letter for hydrogen but I'm not 100% sure
if I'm correct, then ur welcome <3 it's always nice to be nice UwU
here's Jay Jay for u cuz I love her ^^
What type of energy is used to form a chemical bond?
Solar energy
Free energy
Stored energy
Heat energy
Heat energy
I thing it's that? ok will hope you have a good day :)
What is the molar mass of Al(NO3)3 · 3H2O?
Answer:
Go to your periodic table and look for each element. Find the mass for Aluminum, Nitrogen, Oxygen, and Hydrogen.
After you find those, for each compound you must add them together and find the least amount of sig figs after the decimal point.
For the first compound, Al(NO3)3, you will have a total of
1 Aluminum atom
3 Nitrogen atoms
9 Oxygen atoms
Aluminum has 26.982 g/mol
Nitrogen has 14.007 g/mol
Oxygen has 15.999 g/mol
Now multiply those numbers by the amount of atoms of each element.
(1)26.982 g/mol = 26.982 g/mol
(3)14.007 g/mol = 42.021 g/mol
(9)15.999 g/mol = 143.991 g/mol
now add all of those numbers together, and you see that their least significant figure after the decimal is 3, so round to 3 digits after the decimal point.
26.983 + 42.021 + 143.991 = 212.994
now do the same for the other compound
to start you off.. you have
6 Hydrogen atoms
3 Oxygen atoms
Hydrogen has 1.009 g/mol
Oxygen has 15.999 g/mol
the least significant figure after the decimal point is 3, so round you 3 digits after the decimal point.
after you finish getting your totals, you. until them and find the greatest sig fig over all. comment on this if you need further instruction :)
If a balloon containing 3000 L of gas at 39°C and 99 kPa rises to an altitude where the pressure is 45.5 kPa and the temperature is 16°C,
the volume of the balloon under these new conditions would be calculated using the following conversion factor ratios:
( the one I have marked, I’m not sure if that’s the answer or not )
[tex]\tt =3000~L\times \dfrac{289}{312}\times \dfrac{99}{45.5}[/tex]
Further explanationGiven
3000 L of gas at 39°C and 99 kPa to 45.5 kPa and 16°C,
Required
the new volume
Solution
Combined with Boyle's law and Gay Lussac's law
[tex]\tt \dfrac{P_1.V_1}{T_1}=\dfrac{P_2.V_2}{T_2}[/tex]
T₁ = 39 + 273 = 312
T₂ = 16 + 273 = 289
Input the value :
V₂ = (P₁V₁.T₂)/(P₂.T₁)
V₂ = (99 x 3000 x 289)/(45.5 x 312)
or we can write it as:
V₂ = 3000 L x (289/312) x (99/45.5)
How many molecules of nitrogen dioxide (NO2) can be produced from 4 moles
of oxygen (O2)? *
The number of molecules of Nitrogen dioxide : = 4.816 x 10²⁴
Further explanationGiven
4 moles of Oxygen(O2)
Required
The number of molecules
Solution
Reaction
2NO + O2 ⇒ 2NO2
From the equation, mol NO2 :
= 2/1 x mol O2
= 2/1 x 4 moles
= 8 moles
The number of molecules :
= 8 x 6.02 x 10²³
= 4.816 x 10²⁴
Which of the following organisms would NOT be in the first trophic level of an energy pyramid?
A. dog
B. tree
C. algae
D. grass
The dog would not be in the part of first trophic level of an energy pyramid.
What is energy pyramid?Energy pyramid is defined as a model that show the flow of energy from one tropic or feeding level to next tropic or feeding level in an ecosystem.
There are basically three energy pyramid.
Pyramid of numberPyramid of biomassPyramid of energyTrophic level is defined as the source based on their nutrition or food, organisms occupy a specific place in a food chain.
First trophic level contains only green plants and producers. Their plants and product where consumed by second level of organisms.
Thus, the dog would not be in the part of first trophic level of an energy pyramid.
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PLEASE HELP ME RNNNN!!! A specific characteristic, such as blue eyes, is known as a *
Answer:
A trait is a specific characteristic of an organism. Traits can be determined by genes or the environment, or more commonly by interactions between them. The genetic contribution to a trait is called the genotype.
Explanation:
if not then its a feature,
Calculate the molar concentration of 4.75 moles of NaCl in
0.50 liters of water?
Answer:
9.5 m
Explanation:
First, divide 4.75 m by the 0.50 l
4.75/0.50
This leaves you with 9.5 m
6CO2 + 6H20 + Energy
Co H1206 + 602
D. heat of reaction
O C. thermal reaction
B. endothermic reaction
A. exothermic reaction
⚠️⚠️PLEASE HELPP⚠️⚠️
Describe an every day example of an object that has energy of motion and object that has stored energy
Answer:
Humans
Explanation:
Humans have energy of motion and store energy.
Every object will have any form of energy. For instance, when we are walking we gains a kinetic energy. We use electronic devices where electrical energy is stored and can be converted to mechanical energy to activate any motors.
What is energy transformation?Energy can neither be created nor be destroyed. However it can be transformed to any other forms. Thus, the total energy will conserved always.
We have a lot of example for energy transformation and storage. The energy form stored by virtue of the position of an object is called potential energy. Whereas, when the object starts moving potential energy converts to kinetic energy.
Thus, thermal vibrations of particles, our every day activities all are associated with a kinetic energy. Kinetic energy of each body depends on the mass and velocity of the body. The more the mass and velocity more will be the kinetic energy.
To find more on kinetic energy, refer here:
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The two animals above are similar looking can reproduce. What can be inferred about these two animals
Answer:
What are the two animals?
Explanation:
what is the change in freezing point of a 1.75 molal solution of nacl in water? the kf for water is 1.86 degrees c/m.
Answer:
-6.51
Explanation:
Multiply 1.86 x 2 x 1.74 and then you get your answer.
Answer:
As the molality increases by 1 m, there is a corresponding decrease of 1.86°C in the solution’s freezing point.
Explanation:
Anser on EDge
what is the density of a 12-gram sample of zinc with volume of 8.4 cm3?
pls hurry pls
AnswerIm telling your teacher "Ms.Byrd" your in 8th grade and go to berry middle?
Explanation:
