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Rudik [331]
3 years ago
13

Atoms are made of subatomic particles called protons, electrons and neutrons. What is true about the number of protons and elect

rons in a
stable atom?


A. the number of protons and electrons are equal

B. there are less protons than electrons

C. there are more protons than electrons
Chemistry
1 answer:
netineya [11]3 years ago
4 0
A. The number of protons are always the same as electrons.
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3
atroni [7]

Answer:

(1) atomic numbers

Explanation:

The observed regularities in the properties of the elements on the periodic table are periodic functions of their atomic numbers.

  • Atomic number is the number of protons in an atom.
  • The periodic law states that "the properties of elements are a periodic function of their atomic number".
  • Elements on the periodic table are arranged based on the atomic numbers they contain.
  • The number of positively charged particles in an atom is the atomic number.
6 0
2 years ago
A sample of a gas has a volume of 852 mL at 298 K. If the gas is cooled to 200K, what would the new volume be?
Colt1911 [192]

Answer:

571.81 mL

Explanation:

Assuming constant pressure, we can solve this problem by using <em>Charles' law</em>, which states that at constant pressure:

  • V₁T₂=V₂T₁

Where in this case:

  • V₁ = 852 mL
  • T₂ = 200 K
  • V₂ = ?
  • T₁ = 298 K

We <u>input the data</u>:

  • 852 mL * 200 K = V₂ * 298 K

And <u>solve for V₂</u>:

  • V₂ = 571.81 mL

The new volume would be 571.81 mL.

4 0
3 years ago
I need HELP! What is a variable that meteorologist track to make weather forecast? The answers are either: air pressure or barom
larisa [96]
A barometer is a tool, not a variable. A barometer measures barometric or air pressure, which is a variable that meteorologists use to predict the weather.
3 0
3 years ago
Read 2 more answers
Which symbol(s) represent SI units for temperature? Check all that apply.
Arisa [49]
I think its the first 1 C i remember answering this question on my school work

6 0
3 years ago
Read 2 more answers
An element blank is its row of the periodic table
Anna007 [38]
Rows in the periodic table are called periods...on the other hand, columns are called groups.
4 0
3 years ago
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