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Iteru [2.4K]
3 years ago
13

Question 2 2 points) Which of the atoms shown has an atomic number of 42 1 2 4 7

Chemistry
1 answer:
vaieri [72.5K]3 years ago
7 0

Answer:

4 is the answer

Explanation:

i am not sure for this question

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mr Goodwill [35]

Answer:

this look hard

Explanation:

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3 years ago
A molecule with the formula C18H36O2 is probably a?
Alina [70]

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3 0
3 years ago
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How do the numbers of metal and non-metal elements compare? Estimate an approximate percentage difference.
Lerok [7]

Answer:

metal to non metal ratio is 97/21 = 4.62 or

82.2% metals, 17.8% non metals

Explanation:

How do the numbers of metal and non-metal elements compare? Estimate an approximate percentage difference. (learning about the periodic table if...

of 118 elements in the periodic table , 21 are non metals (even H has metallic properties when approching 0 degrees K)

this means there ar 21 nonmetals and 118-21=97 metals.

6 0
2 years ago
A student reduces the temperature of a 300 cm3 balloon from 60°c to 30°
FromTheMoon [43]

We can use the ideal gas equation which is expressed as PV = nRT. At a constant pressure and number of moles of the gas the ratio T/V is equal to some constant. At another set of condition of temperature, the constant is still the same. Calculations are as follows:

T1 / V1 = T2 / V2

V2 = T2 x V1 / T1

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<span>V2 = 272.99 cm³</span>

7 0
4 years ago
How do the tilt of earths axis and earths movements around the sun cause seasons ?
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For example when the northern hemisphere is experiencing summer it is tilting toward the sun and the Southern Hemisphere is experiencing winter and is tilting away from the sun
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3 years ago
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