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Likurg_2 [28]
4 years ago
10

Dmitri Mendeleev and Henry Moseley developed their periodic tables about forty years apart. During that time, many discoveries i

n chemistry were made. Which fact was most likely discovered between the time of Mendeleev’s table and the time of Moseley’s table that helped Moseley develop his version? Atomic mass is the average mass of different samples of the same element. Different elements can have similar chemical properties even if their atomic masses are different. The number of protons in an atom is different than the atom’s total mass. Protons strongly affect an element’s atomic mass, while the electrons in atoms do not.
Chemistry
2 answers:
Travka [436]4 years ago
6 0

Answer:

Its C

Explanation:

Sindrei [870]4 years ago
4 0

Answer:

The first one I think

Explanation:

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_____________ is a common and tasty compound made up of the elements carbon, hydrogen, and oxygen
ziro4ka [17]

Answer:

Glucose

Explanation:

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Glucose is composed of carbon hydrogen and oxygen in a ratio of 1:2:1 as typified by its formula. It is known for its sweet taste. It can be combined with fructose in table sugar.

8 0
3 years ago
Science-HELP ME IDK THE ANSWER TO THIS
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Explanation:

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3 years ago
A sample of gas is held at 1000C at a volume of 20 L. If the volume is increased to 40 L, what is the new temperature of the gas
kaheart [24]

Answer:

The new temperature will be 2546 K or 2273 °C

Explanation:

Step 1: Data given

The initial temperature = 1000 °C =1273 K

The volume = 20L

The volume increases to 40 L

Step 2: Calculate the new temperature

V1/T1 = V2/T2

⇒with V1 = the initial volume = 20L

⇒with T1 = the initial temperature = 1273 K

⇒with V2 = the increased volume = 40L

⇒with T2 = the new temperature = TO BE DETERMINED

20L/ 1273 K = 40L / T2

T2 = 40L / (20L/1273K)

T2 = 2546 K

The new temperature will be 2546 K

This is 2546-273 = 2273 °C

Since the volume is doubled, the temperature is doubled as well

8 0
3 years ago
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Scilla [17]

Answer:

The stable ion the sulfur would form is the sulfide ion,

Explanation:

When any atom accept electrons it converts into negative ion/an anion. So it will change into Z 3− after gaining 3 electrons.

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The hydrogen halide gases all have the same general formula, HX, where X can be a halogen (F, CI, Br, or I). HCl 2 effuses times
Natali [406]

Answer:

Explanation:

We collected the gas over water; to obtain the true pressure of the gas, we have to correct for the vapor pressure of water. We look up the vapor pressure of water at 24 ºC: 24 torr. The pressure of the evolved gas is, therefore, 738 −24 = 714 torr. 2. We want the molar mass of the

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