What is the velocity of a 500 kilgram elevator that has 4000 joules of energy?
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What is the name of P3N6?
36 Which compound has the highest percent composition by mass of strontium?(1) SrC12 (2) SrI2 (3) SrO (4) SrS
In atomic emissions spectroscopy, the atom(s) absorb energy, become excited, and release energy in what form?
Research about the reaction of baking soda and vinegar
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Answer:
4 moles of Li₃N will be produced in this reaction
Explanation:
The reaction is:
6Li + N₂ → 2Li₃N
If the nitrogen gas is the excess reactant, the limiting must be the lithium.
You always have to make calculations with the limiting reactant. You never use the excess reagent.
Ratio is 6:2.
The rule of three to solve this is:
6 moles of lithium can produce 2 moles of nitride
Therefore, 12 moles of Li must produce (12 . 2) / 6 = 4 moles of nitride
Answer:
4.0 moles of lithium nitride will be produced
Explanation:
Step 1: Data given
Number of moles lithium (Li) = 12.0 moles
Nitrogen gas (N2) is in excess.
Step 2: The balanced equation
6Li + N2 → 2Li3N
Step 3: Calculate moles of lithium nitride (Li3N)
For 6 moles Lithium we need 1 mol nitrogen gas to produce 2 moles lithium nitride
For 12.0 moles lithium we'll have 12.0/ 6 = 2.0 moles nitrogen gas to react to produce 12.0 / 3 = 4.0 moles lithium nitride
4.0 moles of lithium nitride will be produced
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Density is an intensive property as it does not depend on the quantity of the substances Whereas mass and volume are extensive property. Therefore, Clis the only gaseous element has the greatest density at STP.
What is density?
Density tells about the compactness of the substances, how much dense is the substances in other words. Object that is more denser than water they just sink in the water.
Mathematically,
Density = Mass of the element ÷volume marked on the graduated cylinder
From formula we can see that density is directly proportional to molar mass of the given element. the increasing order of molar mass is N< O
<F
<Cl
. The increasing order of density would be N
< O
<F
<Cl
.
Therefore, Cl is the only gaseous element has the greatest density at STP.
To know more about density, here:
#SPJ5
In general 1 mole of any gas will have a density of (mol.mass)/22.4 gram per liter at STP
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Answer:
- The conditions under which a real gas is most likely to behave ideally is at low pressure and hight temperatures.
Explanation:
According to molecular kinetic theory, 1) gas particles (molecules or atoms) occupy a negligible fraction of the total volume of the gas, and 2) the force of attraction between gas molecules is zero.
Those two assumptions constitute the basis for the behavior of a gas and an ideal gas.
The lower the pressure and the higher the temperature the closer those assumptions are valid for real gases.
At low pressure, the particles of the gas will be more separated from each other and so the tiny volume they occupy will be a smaller fraction of the total volume.
At higher temperatures, the particles will have more kinetic energy, which means that they will have larger average speed, and so the forces between the molecules will count less.
So, you conclude that under low pressure and high temperatures a real gas is most likely to behave ideally.
B) B,C,E
C) B, E, F
D) C,D,E
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Flammability, Ability to rust and Ability to tarnish (C,E,F) are chemical properties of an element.
The property of an element is the characteristic feature of that element which helps us to differentiate it from another element.
We have
- The Physical proprieties- These are features of an element which we can identify by sight and touch, Some of them include colour, hardness, boiling and ,melting point, size etc
- Chemical properties These are the features of an element which w\e observe when the element has undergone a chemical change which changes its composition. Examples are Flammability, rust, tarnish , corrosion etc.
See more here:brainly.com/question/2116116
Its a c,e,f
Sadly i got it wrong
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(Side Note: Isotopes are atoms of the element that have the SAME number of protons but different number of neutrons, so they have different mass numbers. Also average atomic mass is the average of all the isotopes in an element - this number is the one that is shown on the periodic table of elements, not mass number).
Let me show you how to do this..
For the isoptope 63Cu I will first need to convert it's percentage of abundance into a decimal, because we don't use the percentage to multiply. 69.97% -> 0.6997. Now I am going to take it's atomic mass 62.9300 and multiply that by 0.6997.
62.9300*0.6997=44.0321
Now we still need to find calculate this for the isotope 65Cu. To convert 31.03% to a decimal I will just move the decimal point two places to the left, to get 0.3103.
So I am going to take this and multiply it by 64.9200 the atomic mass of the isotope 65Cu.
64.9200*0.3103=20.1447
Add the two of these to get the average atomic mass..
20.1447 + 44.0321=64.1768
B. Carbon dioxide
C. Water
D. Sodium hydroxide
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Answer: D. Sodium hydroxide
Explanation:
A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.
Neutralization reaction is a type of double displacement reaction where an acid reacts with base to produce salt and water.
Thus on reacting hydrochloric acid and sodium carbonate we get sodium chloride, water and carbon dioxide as products.