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
Harrizon [31]
3 years ago
6

Describe the contributions made by the following scientists to the development of the periodic table.

Chemistry
1 answer:
Basile [38]3 years ago
6 0

Answer:

B

Explanation:

dimitri Mendeleev......

You might be interested in
the scientific law of conservation of mass states that the total amount of mass in an isolated system remains constant. This mea
Verdich [7]
It describes how, when particles/mc/elements react, despite forming different substances the mass is neither created nor destroyed but only converted.
4 0
3 years ago
Read 2 more answers
What is the empirical formula for a compound if a sample contains 3.72 g of P and 21.28 g of Cl
fenix001 [56]
M(P)=3.72 g
M(P)=31 g/mol

m(Cl)=21.28 g
M(Cl)=35.5 g/mol

n(P)=m(P)/M(P)
n(P)=3.72/31=0.12 mol

n(Cl)=m(Cl)/M(Cl)
n(Cl)=21.28/35.5=0.60 mol

P : Cl = 0.12 : 0.60 = 1 : 5

PCl₅ - is the empirical formula
6 0
3 years ago
What is an indication that a lake is healthy?
N76 [4]

Answer:

D

Explanation:

As bioindicators are the organism that indicate or monitor the health of the environment

7 0
3 years ago
Read 2 more answers
Give me a statement regarding the process of science discovery and development of atomic theory
matrenka [14]
Can you say please? Just kidding!
The process of science discovery depends upon changing your theories based upons new evidence from new experiments.  New technology allows for new experiments, leading to new theories.  
5 0
3 years ago
What is the percent composition of carbon in heptane c7h16
Gnom [1K]

Answer: the percent composition of carbon in heptane is 83.9%

Explanation:

<u>1) Atomic masses of the atoms:</u>

  • C: 12.01 g/mol
  • H: 1.008 g/mol

<u>2) Molar mass of heptane:</u>

  • C₇H₁₆: 7 × 12.01 g/mol + 16×1.008 g/mol = 100.2 g/mol

<u>3) Mass of carbon in one mole of heptane:</u>

  • C₇: 7 × 12.01 g/mol = 84.07 g/mol

<u>3) Percent composition of carbon:</u>

  • % = (mass in grams of C) / (mass in grams of C₇H₁₆) × 100 =

           = (84.07 g/ 100.2 g) × 100 = 83.9% ← answer

8 0
3 years ago
Other questions:
  • At 1.75 atm, a sample of gas takes up 2.88L. If the pressure in the gas is increased to 2.25 atm, what will the new volume be
    6·1 answer
  • 1. Write the balanced chemical equation for the synthesis of magnesium phosphide from its elements, including the word “energy”
    12·1 answer
  • PLEASE HELP WILL MARK BRAINLIEST
    8·1 answer
  • Why do some fuels when burnt produce more heat than others?
    12·1 answer
  • In a certain experiment 10.0g of magnesium nitride is allowed to react with 5.00 g of water. Calculate the final mass of ammonia
    8·1 answer
  • An average reaction rate is calculated as the change in the concentration of reactants or products over a period of time in the
    9·1 answer
  • List the numbers of protons, neutrons, and electrons in Chlorine-18. (3 points)
    15·1 answer
  • Help me pleaseeeeee​
    15·1 answer
  • I'll mark you the brainlest just answer the question
    9·1 answer
  • Calculate the amount of heat deposited on the skin of a person burned by 1.00g of steam at 100.0C. Skin temperature is 37C. ΔHva
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!