what is the best definition of an element? a. an element is a substance that cannot be broken down. b. an element is a positively charged particle. c. an element is a substance only found in stars.

Answers

Answer 1

Answer: The correct answer is a

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The process of splitting an atom into two nuclei with smaller masses is called _____. transmutation nuclear fission nuclear fusion chain reaction

Answers

the process of splitting an atom into two nuclei with smaller masses is called nuclear fission

Answer: nuclear fission

Explanation:

Just did the test and got it right. :)

Nitrogen gas has the chemical formula N2. One molecule of nitrogen gas is made up ofA.
one atom of nitrogen and one atom of oxygen.
B.
two atoms of nitrogen and one atom of oxygen.
C.
two atoms of nitrogen.
D.
one atom of nitrogen.

Answers

Nitrogen gas has the chemical formula N2. One molecule of nitrogen gas is made up of two atoms of nitrogen.

The correct option is C.

Explanation:

Nitrogen gas has the chemical formula $N_(2)$ , which means that two atoms of nitrogen element combined to form nitrogen gas.

The combination of two atoms of element nitrogen produce dinitrogen atom.

Dinitrogen is the nitrogen gas usually present in atmosphere of the earth in abundance.

2 atoms of nitrogen element

N + N = $N_(2)$

the gas is colorless and odorless formed at standard condition of temperature and pressure. The two nitrogen atoms are tightly bonded with triple bonds in between the atoms.

Which set of numbers gives the correct possible values of I for n=3?(0,1,2)
(0,1,2,3)
(-2,-1,0,1,2)
(-3,-2,-1,0,1,2,3)

Answers

Symbol "l" denotes orbital quantum number which describes the shape of the orbital. From the given choices, those are magnetic quantum numbers which denotes the number of orbitals which is often a range of values from negative to positive. 2l + 1 is the formula to know the number of orbitals. l = n -1, where n is principal quantum number. Therefore l = 2, MI = (-2, -1, 0, 1, 2) or 5 orbitals.

Carbon -14 is an example of dating

Answers

Carbon-14 is a radioactive isotope of carbon and is used primarily in radiocarbon dating at archaeological sites since we know the half life for carbon-14 and the ratio of carbon-12 and carbon-14 a living thing probably had when it died and the difference in that ratio can tell us how old the object is.

I hope this helps. Let me know in the comments if anything is unclear or if your question was asking something else.

Answer: Radioactive

Explanation:

What is the approximate tilt of the earth?
18°
23°
45°
60°

Answers

The answer is 23.5° but I guess 23° is closest

Not the approximate tilt the exact is 23 1/2 degrees

Oil flows upward in the wick of a lantern because of the liquid property calledA. density.
B. meniscusity.
C. viscosity.
D. capillarity.

Answers

B
Meniscusity the convex or concave upper surface of a column liquid, the curvature of which is caused by surface tension

Capillarity. Capillary action is what causes anything with a wick to work, think about when you stick the corner of a paper towel in water, the water soaks up the paper towel.

Other Questions

Which one of the following groups of chemical compounds is composed entirely of organic compounds?A. C2H4O, CH2O, CaSO4, C3H5(OH)3B. C2H2, CH4, CaCl2, CaCN2C. Ch3OCH3, Ca3(PO4)2, CO2, H2CO3D. C6H6, C2H5OH, C6H5CH3, C3H5(NO3)3

The halogens, the elements of Family 17 on the periodic table, combine easily with elements from Family 1. When a halogen reacts with a metal, what type of compound is formed? 1.potassium 2. alloys 3.noble gas 4.salt

11x + 1312x+6 Solve for x

Which equation represents the formula for the speed of a wave