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Alex17521 [72]
3 years ago
13

Which of the following materials is most effective for stopping gamma radiation?

Chemistry
1 answer:
enyata [817]3 years ago
5 0
Several centimeters of lead. Gamma rays have the highest penetrating power and therefore need a thick layer of something, in most cases lead, to prevent penetration. (This is why if you have ever go to the dentist they put a heavy thing on you made of lead, to prevent the penetration of gamma rays that can destroy your most important organs).
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The process of an atom releasing energy when it moves to a lower energy state is called
Inga [223]
The process of an atom releasing energy when it moves to a lower energy state is called emission.
4 0
3 years ago
How many molecules of CaCi2 are equivalent to 75.9 grams
horsena [70]
<em>M CaCl₂: 40+(35,5×2) = 111 g/mol</em>


6,02·10²³ molecules ---------- 111g
X molecules --------------------- 75,9g
X = (75,9×<span>6,02·10²³)/111
X = <u>4,116</u></span><span><u>·10²³</u> molecules of CaCl</span>₂

:)
8 0
3 years ago
What is the only true way to tell if a chemical reaction has occurred?<br> CFU
Murljashka [212]

Answer:

change of colour

Explanation:

3 0
3 years ago
What was done to the linear parent function, f(x) = x, to get the function<br>g(x) = 1/6 x​
s2008m [1.1K]

Answer:

Vertically Shrunk by a factor of 1/6

Explanation:

Parent Formula: f(x) = a(bx - c) + d

<em>a</em> - vertical shrink/stretch and x-reflections

<em>b</em> - horizontal shrink/stretch and y-reflections

<em>c</em> - horizontal movement left/right

<em>d</em> - vertical movement up/down

Since we are only modifying <em>a</em>, we are dealing with vertical shrink/stretch:

Since a < 1 (1/6 < 1), we are dealing with a vertical shrink of 1/6.

Since a > 0 (1/6 > 0), we do not have a reflection over the x-axis.

7 0
2 years ago
Is milk SMELLING sour a physical or chemical property? I know that milk souring is a chemical change, but the question does ment
s2008m [1.1K]
It's not chemical because it would have to react to something to change so it is physical change because it is the same thing but it just smells I hope this helped
7 0
3 years ago
Read 2 more answers
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