1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
jenyasd209 [6]
2 years ago
5

Can somebody help me please? it’s urgent

Chemistry
1 answer:
Anettt [7]2 years ago
4 0

Answers:

See attached table

Explanation:

The isotope symbol will have the mass number and chemical symbol.  The atomic number will be equal to the number of protons because the atomic number is the number of protons in an atom.  The electrons will be equal to the protons because the atom is neutral.  The neutrons can be found by subtracting the number of protons from the mass number.  The mass number can be found by adding the protons and neutrons.  It is also in the name of the isotope.

You might be interested in
What is the volume of one mole of any gas at STP?
Vikki [24]
The volume of one mole of any gas at Standard Temperature and Pressure (1 atm and 0 degrees Celsius [273K]) is 22.4 L.
7 0
3 years ago
It is logical to conclude that water cannot dissolve vegetable oil because the oil is
Gekata [30.6K]
In chemistry, there is a common note that says, "Like dissolves like".

This pertains to the concept that polar substances can dissolve only other polar substances. Also, nonpolar substances are also only able to dissolve nonpolar substances. 

Polarity of the substance depends primarily on the type of bond and the difference in electronegativity. 

Water is a polar substance while vegetable oil is not. From the concept presented above, it may be concluded that water will not be able to dissolve the vegetable oil and the assumption is logical. 
3 0
3 years ago
Read 2 more answers
Question 7 (Essay Worth 5 points)
Lubov Fominskaja [6]

The periodic table of elements is divided into columns and rows. The vertical columns represent the groups while the horizontal rows represent the periods. A group of elements usually have similar physical and chemical properties. The first column of the periodic table is made up of 7 elements including SODIUM.

1. The name of the element chosen is sodium and its chemical symbol is Na.

2. Sodium is a metal and thus it has metallic properties.

3. Sodium belongs to group one elements whose family name is ALKALI METALS.

4. The neutral atom of sodium is made up of 11 protons, 11 electrons and 12 neutrons.

5 0
3 years ago
Read 2 more answers
The periodic table is based on an element's
nasty-shy [4]

Answer:

Atomic number

Explanation:

7 0
2 years ago
Describe a procedure to separate a mixture of sugar black pepper and pebbles
slamgirl [31]
Put the mixture in water, the pebbles will sink, the pepper will float, and the sugar will dissolve
7 0
3 years ago
Other questions:
  • 4.87 x 103 + 1.092 x 107 =
    9·2 answers
  • A student obtains the following data: Mass of empty, dry graduated cylinder: 21.577 g Volume added of NaCl solution: 4.602 mL Ma
    11·1 answer
  • What is a,well designed experiment called?
    15·1 answer
  • PLEASE HELP!!!!!! WILL GIVE BRAINLIEST!!!! IT'S SUPER EASY
    6·1 answer
  • Write a chemical equation for NH4+(aq) showing how it is an acid or a base according to the Arrhenius definition. Express your a
    5·1 answer
  • Uhu khanay sai kia hota hai
    9·1 answer
  • *WILL GIVE BRAINLIEST FOR CORRECT ANSWER*<br> question in picture
    15·2 answers
  • PLEASE HELP!! DIMENSIONAL ANALYSIS AND MOLE CONVERSIONS CHEMISTRY!!
    12·1 answer
  • What is the pH of the solution if the [H+] is 1 x 10-12 ?
    15·1 answer
  • Determine if the following two structures are identical, isomers, or unrelated? OH O CH3CHCH2CH3 CH3CH2CCH3
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!