subject

Chemistry, 19.10.2021 14:00 nez45

Calculate the atomic mass of silicon, which occurs naturally as 92% silicon-
28, 5% silicon-29, and 3% silicon-30.

ansver

Answers: 2

Show answers

Another question on Chemistry

question

Chemistry, 22.06.2019 00:00

Substance x has a fixed volume, and the attraction between its particles is strong .substance y had widely spread out particles and can be compressed what can most likely be concluded about these substances

Answers: 2

question

Chemistry, 22.06.2019 07:30

11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg

Answers: 3

question

Chemistry, 22.06.2019 10:00

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?

Answers: 1

question

Chemistry, 22.06.2019 13:30

What produces wave a)sound b) heats c)transfer of energy d)vibrations

Answers: 2

You know the right answer?

Calculate the atomic mass of silicon, which occurs naturally as 92% silicon-
28, 5% silicon-...

Questions

question

Biology, 17.10.2019 17:40

Arthropods like grasshoppers molt because a. their exoskeleton is damaged. b. their exoskeleton cracks and lets in water. c. their h...

question

Physics, 17.10.2019 17:40

Which of the following alternative energy technologies is most likely to be used to power a car? a. wind b. geothermal c. biofuel

question

History, 17.10.2019 17:40

What was the goal of the dawes act? a. provide funding for "indian schools" b. assimilate native americans into the dominant...

question

Biology, 17.10.2019 17:40

Why do some people believe the human eye is an example of why evolution cannot be true...

question

English, 17.10.2019 17:40

Which piece of dialogue from leslie marmon silko’s story "the man to send rain clouds" best illustrates that christian rites are not important to leon...

question

Biology, 17.10.2019 17:40

The strand that make up dna are antiparallel. this means that?...

question

Mathematics, 17.10.2019 17:40

You have 324ft of fabric to make a circular play parachute for kids. what is the radius of the largest parachute you could make? round to the nearest...

question

History, 17.10.2019 17:40

What happened after the first indochina war?...

question

History, 17.10.2019 17:40

How might this front page sell the newpapers...

question

Mathematics, 17.10.2019 17:40

Which of the following equations is equivalent to 4[x + 2(3x – 7)] = 22x – 65?...

question

Health, 17.10.2019 17:40

An approximation of a number, based on reasonable assumptions, is called a(n) a. biotic factor b. limiting factor c. immigration d. estimate...

question

Mathematics, 17.10.2019 17:40

Item: the function f(x) is graphed below. use the graph of the function to find, f(2).a) -2b) -1c) 1d) 2...

question

Mathematics, 17.10.2019 17:40

The graph of this quadratic function is a parabola. what is the x-coordinate of the vertex? y = x^2 - 3...

question

Geography, 17.10.2019 17:40

The most accurate way to show earth's surface is a what?...

question

History, 17.10.2019 17:40

Which best describes the view of earth’s surface from space? a. a planet covered in alternating bands of land and water b. a planet covered mostly by...

question

Social Studies, 17.10.2019 17:40

Describe the political crisis of the 1850's and how they led to the civil war...

question

English, 17.10.2019 17:40

Dose little red riding hood get eaten...

question

Mathematics, 17.10.2019 17:40

The vertices of a pre-image are located at points (2,3), (0,0) and (-2,1). if the image triangle has vertices with coordinates (6,9), (0,0) and (-6,3)...

question

Mathematics, 17.10.2019 17:40

F(x) = 3 x -1 and g(x) = x+ 2,find (f+ g) (x)...

question

Mathematics, 17.10.2019 17:40

Which of the following lines is parallel to the graph of 5x+2y=8? a) 2x+5y=3 b) 5x-2y=6 c) -10x-4y=7 d) -10x+4y=9...

More questions: Chemistry Another questions

Questions on the website: 13722367