The Principle Quantum Number describes what aspect of electron orbitals?
a) shape.
b) orientation.
c) spin.
d) energy level.
Answer:
C
Explanation:
Because that's the spin in its orbitals.
Question:
A. Does this picture show a physical or chemical change? How do you know?
B. Does this picture show a physical or chemical change? How do you know?
Answer:
A. Chemical
B. physical
Explanation:
what is the GMM of 64gm of oxygen
Answer:
16 g/mol
Explanation:
The GMM of oxygen is 16 no need for mass
Which phrase describes the motion, collisions, and
attractive forces of ideal gas particles?
A) random straight-line motion, KE lost in
collisions, and strong attractive forces
B) random curved-line motion, KE lost in
collisions, and no attractive forces
C) random curved-line motion, no KE lost in
collisions, and strong attractive forces
D) random straight-line motion, no KE lost in
collisions, and no attractive forces
Answer:
B
Explanation:
Why does calcium conduct electricity?
Answer:
calcium is a metal and metals are good conductors of electricity as they contain mobile electrons.
Explanation:
What part of the atom is involved in chemical reactions?
neutrons
protons
electrons
nucleus
Answer:
electron
Explanation:
hope this helps:)
According to the research, electrons are the part of the atom that is involved in chemical reactions.
What are electrons?It is a subatomic element that is located around the nucleus of the atom, formed by neutrons and protons and is the lightest essential particle that makes up an atom.
In chemical reactions reagents or reactants are involved, specifically in oxidation-reduction reactions electrons are transferred between chemical species, the oxidizing substance loses electrons and the other gains electrons.
Therefore, we can conclude that according to the research, electrons are the part of the atom that is involved in chemical reactions.
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which other metal can substitute (in place of) iron explain you answer.. Aluminum, copper or iron?
Answer+Explanation:
Titanium ( in place of iron)
Titanium could be an excellent replacement for iron when it comes to tensile strength versus weight. It would be the first choice as a building material metal and building skeletons/bridges would use titanium instead of iron.
Magnesium alloys (in place of aluminum)
Magnesium alloys potentially met the present demands for lighter and reliable construction. With comparable specific stiffness, higher specific strength and energy absorption magnesium alloys have the potential to replace steel and aluminum alloys.
aluminum (in place of copper)
Most non-copper metal cabling is aluminum, and it is often used in areas where copper is not a likely alternative. However, it is used more now as a replacement than it has ever been. It is cheaper than copper, and its relative density allows for more cable to be made from a ton of aluminum than a ton of copper.
hope it helps you
What do I write? Please hurry
Answer:
Plants wilt when the turgor turns to zero. From diminished water in cells. The rate of water being lost is greater then the water being absorbed.
Something like this. NOT EXACTLY THIS this is just an example.
I didn't know anything about this topic but I looked it up. For the other words I would look up the other words and see what they have to do with plants withering.
I 6) Ca(OH)2 + 2HCl -----> CaCl2 + 2H2O How many molecules of calcium chloride are produced by the combination of 3.5x1024 molecules of hydrochloric acid with excess calcium hydroxide?
Answer:
go for what ever brother GUESS / imagine this gate brainlyist for literally doing nothing.
Explanation:
Question 1 of 10
What would you need to do to calculate the molality of 10 mol of NaCl in 200
mol of water?
A. Convert the 200 mol of water to kilograms of water.
B. Convert the 200 mol of water to liters of water.
C. Convert the 10 mol of NaCl to grams of NaCl.
O D. Convert the 10 mol of NaCl to kilograms of NaCl.
SUBMIT
Answer:
A. Convert the 200 mol of water to kilograms of water.
Explanation:
To find the molality of 10mol of NaCl in 200mol of water, convert the 200mol of water to kilograms of water.
Molality is one of the several ways of measuring concentration of a solute in a solvent;
Molality = [tex]\frac{number of moles of solute}{mass of solvent}[/tex]
To solve this problem, simply convert the 200mole to mass of water.What is the mass of 2.23 x 10^23 atoms of sulfur?
Answer: 32.07 g/mole
Explanation:
1 mole of sulfur contains 6.022 ×10^23 atoms
1 mole is equal to 32.07 g
6.022 ×10^23 atoms = 32.07
what is the ratio of mass of 0.7moles of nitrogen gas to 11.2liters of oxigen gas at STP?
Answer:
if a 40.0-gram sample of the gas occupies 11.2 liters of space at STP? A balloon is filled with 5 moles of helium gas.
Explanation:
Ammonia (NH3) is widely used as a fertilizer
and in many household cleaners. How much
ammonia is produced when 3.55 mol of hydrogen gas react with an excess of nitrogen
Answer:
Mass of ammonia produced = 40.29 g
Explanation:
Given data:
Number of moles of H₂ = 3.55 mol
Mass of ammonia produced = ?
Solution:
Chemical equation:
3H₂ + N₂ → 2NH₃
Now we will compare the moles of ammonia with hydrogen
H₂ : NH₃
3 : 2
3.55 : 2/3×3.55 = 2.37 mol
Mass of ammonia:
Mass = number of moles × molar mass
Mass = 2.37 mol × 17 g/mol
Mass = 40.29 g
Robert Hooke used a microscope to observe tiny spaces in
dead cork bark.
What did his observations lead to the discovery of?
A. Bacterial cells
B. Plant cells
C. Cell division
D. Cell organelles
Explanation:
B. Plant cells is the correct answer
Answer:
plant cells cause the plant cells was his first discorvery
what are the main method of combination of elements ?
Answer: Element can be chemically combined into compound, therefore, a compound consist of two or more elements combined, in definite proportions, by chemical means. Compounds may be formed by combining Adams of their constituent elements by ionic bonds or by covalent bonds.
Explanation:
Sodium is a non-metal
A. True
B. False
Answer:
false
Explanation:
...................
its a metal
In the reaction 2H2O (l) + 2Cl– (aq) → H2 (g) + Cl2 (g) + 2OH– (aq), which substance is oxidized?
A. H2O
B. Cl
C. H
D. OH
E. None of the Above (This is not a redox reaction.)
Answer:
c
Explanation:
because i asked alexa and it told me hehr
what is the force that result because of each kind of combination called?
Answer:
a force is push or pull that act on object as a result of object interaction its surrounding.
Explanation:
What is the correct structure of an atom?
Which percentage represents the amount of Earth's water that is found in oceans?
A 3%
B. 71%
C.97%
Which has the larger radius, F or F− ?
A. They have the same radius.
B. F
C. F−
D. It is impossible to tell.
Answer is B- F has a smaller radius than F− because an additional electron causes greater repulsion in F− is the correct choice and the nuclear charge the radius of the anion increases.
Explanation: I hoped that helped!
The one that have larger radius is F-. The correct option is C.
What is atomic radius?A chemical element's atomic radius is a measurement of the size of its atom, usually the mean or typical distance from the nucleus's center to the outermost isolated electron.
Because a boundary is not a well-defined physical entity, various non-equivalent definitions of atomic radius exist.
As the number of energy levels decreases down a group, the distance between the nucleus and the outermost orbital increases.
As a result, the atomic radius expands. The ionic radius is the distance between the nucleus and the ion's electron cloud's outer edge.
Because they have fewer shells, F and F- are both smaller than the rest. F- now has one more electron than F, causing the radius to increase.
Thus, the correct option is C.
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Collisions between reactant molecules lead to a reaction when the molecules have the correct orientation and
enough kinetic energy
Does salt affect how long an ice cube melts?
I am just talking about normal salt, not special salt (if that exists).
Answer:
Ice cubes with salt melt faster. When you add salt, it dissolves in the water of the ice cube. The freezing temperature of salt water is 32 degrees Fahrenheit lower than that of fresh water.
25 pointss How do the plates and mantle interact at each type of plate boundary?
Answer:
what that girl said lol
Answer:
honestly.. idk lol
Explanation:
Write down the names of compounds represented by the following formulae:
a. Al2(SO4)3
b. CaCl2
c. K2SO4
d. KNO3
e. CaCO3
Hellp plss
The compounds have been formed by the combination of molecules and atoms. The names are a. aluminum sulfate, b. calcium chloride, c. potassium sulfate, d. potassium nitrate, and e. calcium carbonate.
What is the chemical formula?The chemical formula has been defined as the representation of the chemical compound or molecules with the aid of symbols, letters, and coefficients to show the proportions, arrows, parentheses, signs, etc.
The chemical formulas are named as:
Al₂(SO₄)₃ - aluminum sulfate. It has been used in purifying water, sewage treatment, tanning, paper industries, etc.CaCl₂ - calcium chloride. It is an ionic compound used in making electrolytes and sports drinks.K₂SO₄ - potassium sulfate. It has been used for making fertilizers for tobacco and vegetable crops.KNO₃ - potassium nitrate. It is an oxidizer used for making explosives and fertilizers.CaCO₃ - calcium carbonate. It is used as a dietary product to satisfy the needs for calcium and vitamin D for bone strengthening and formation.Learn more about chemical formulas, here:
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Where would the most reactive metallic elements of the periodic table be found?
In the B families
On the top of the table
On the far left of the table
Answer:
I think it should be 'On top of the table'
What is the proper compound formula for Hydrogen Cyanide?
A.) H(CN)2
B.) H2(CN)
C.) HCN
D.) H2(CN2)
Answer:
C
Explanation:
Cyanide's formula can be found either on google on on a reference table at the "polyatomic ions" table. Hydrogen, H, has a charge of 1+ when bonded, and cyanide has a charge of 1- overall, so they will be in a one to one ratio while bonded. As such, the equation is HCN.
help meeeee brainliest for whoever helps
Answer:
no
Explanation:
Answer:
All A's
Explanation:
it might sound sus but it all a's
how many moles of N2O5 are produces by reacting 10 moles of O2?
Answer:
4 moles of N₂O₅
Explanation:
Given parameters:
Number of moles of O₂ = 10moles
Unknown:
Number of moles of N₂O₅ produced = ?
Solution:
To solve this problem, we must write the reaction equation first,
2N₂ + 5O₂ → 2N₂O₅
IN the reaction above;
5 moles of O₂ will produce 2 moles of N₂O₅;
10 mole of O₂ will produce [tex]\frac{10 x 2}{5}[/tex] = 4 moles of N₂O₅
A compound composed of only C and H contains 79.88 % C by mass. What is its empirical formula?
C a CH 3
Ob.CH 2
Oc CH 4
0 0 CH
Оe. Сэн
Answer:
a. CH3
Hope this helps.