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
ella [17]
3 years ago
12

Please tell me the answer ​

Chemistry
1 answer:
Fiesta28 [93]3 years ago
7 0

Answer:

the pair of isotopes are b and e

the element with mass no of 19 is C

the element with atomic no 7is D

Explanation:

B and E are isotopes bcos they have the same atomic no, i.e no of protons. They bother have atomic no of 17 BUT have different mass no i.e sum of neutrons and protons.

(b)C is correct because the sum of the protons and neutrons is 19

(c) D because it has 7 protons

You might be interested in
Besides drinking water, how is water helpful for life and nature?
Contact [7]

Answer:

It keeps us alive, helps us grow plants, helps plants thrive, gives us food, helps keep our animals and crops healthy, cleans us, and so much more

Explanation:

5 0
2 years ago
Raw materials used in the manufacturing of indigenous soap
Harrizon [31]

Answer:

Fat

Alkali

Explanation:

Fat and alkali are the two primary raw materials needed to manufacture soap.

Sodium hydroxide or potassium hydroxide is generally used as an alkali. The use of alkali depends on the intended application of the soap.

Raw animal fat was used in the past but these days, processed fat is used in the soap manufacturing process. Vegetable fats ( e.g, palm oil, olive oil, coconut oil) are also being used in soap manufacturing.

Additives are also used to enrich the color and texture of the soap.

5 0
3 years ago
¿que diferencia hay entre psicrómetro e higrómetro?
Tasya [4]

Answer:

Un higrómetro que para calcular la humedad se vale de la diferencia de temperaturas entre un termómetro con el bulbo seco y otro con el bulbo húmedo, normalmente se denomina psicrómetro.

Explanation:

7 0
3 years ago
If you weighed the atoms that appear on the reactant side of the equation, would they have the same mass as the atoms that appea
tatuchka [14]

Answer:

No

Explanation:

If you added the reactants on the reactant side because there is one atom for nitrogen on the product side while there is two atoms on the product side. There are more hydrogen products on the reactant side as well.

3 0
3 years ago
How is carbon the element used
patriot [66]
Carbon can be used in fuel
6 0
4 years ago
Other questions:
  • Is the answer to this d or no
    9·1 answer
  • 1. This is a physical combination of one substance dissolved in another.
    8·2 answers
  • A bunch of amino acids attached together is called a
    9·1 answer
  • The atomic weight of aluminum is 26.98 amu, and the atomic weight of nickel is 58.69 amu. All aluminum atoms have a mass of 26.9
    14·1 answer
  • A heavyweight boxer winds up and punches a punching bag, which of the following are true?
    11·1 answer
  • How is ethanol different from carbon dioxide?
    8·2 answers
  • What is The molarity of 1.5N solution of aluminum carbonate
    15·1 answer
  • What would the mass be of a single atom of copper?
    7·1 answer
  • A] 1 N2 + 3 H2 → 2 NH3
    12·1 answer
  • q6- convert the fisher projection of the following amino acid into a line structure. label the chiral center on the line structu
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!