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
Xelga [282]
3 years ago
7

The first attempt to classify the elements was made by newlands true or false​

Chemistry
1 answer:
Keith_Richards [23]3 years ago
8 0

Answer:

True. An English scientist by the name of John Newlands tried to classify the elements in a unique manner. He first started by arranging all the elements in a ascending order according to their atomic weights.

You might be interested in
Calculate the final temperature when 50 ml of water at 65 are added to 25 ml of water at 25
Sonja [21]
61.7 degrees celsius

8 0
3 years ago
Can you use volume to measure out a mole of a gas? Why or why not?
Rashid [163]

The volume of a gas is defined by the volume of its container.  

However, given the number of moles, and standard temperature and pressure, you can use the Ideal Gas Law to calculate the volume.

8 0
3 years ago
How many grams of hydrogen chloride can be produced from 1g of hydrogen and 55g of chlorine? What is the limiting reactant?
vova2212 [387]

Answer:

The limiting reactant is hydrogen, and the grams HCl produced is 36.175 g.

Explanation:

Balanced equation is 2 H + Cl2 = 2 HCl.

First thing, convert grams to moles via using molar mass.

Molar mass for hydrogen is 1.0079 g/mol. 1g x 1 mol / 1.0079 g = 0.99216 mol.

Molar mass for chlorine is 70.906 g/mol. 55g x 1 mol / 70.906 g = 0.7756748 mol.

Next, determine which is the limiting reactant - probably the fastest way to do it is just to take one of the reactants, say it's the limiting one, and calculate how much of the other reactant would be needed if that really was the limiting reactant, and then compare it to the actual moles of reactant available.

If hydrogen was the limiting reactant at 0.992 mol, you'd need .496 mol of Cl2 to complete the reaction.

If chloride was the limiting reactant at 0.776 mol, you'd need 1.55 mol of H to complete the reaction.

Comparing these numbers to the amounts we actually have available, the limiting reactant is hydrogen.

Once you've determined that, just plug in the amounts to the balanced equation to get the number of moles of HCL produced, which in this case, is just 0.992 mol.

Now, reverse the process that you took to get the moles of reactant, and you have the grams of product produced.

0.992 mol x 36.4609 g / 1 mol = 36.175 g.

7 0
3 years ago
An atom was observed with +3 charge, n = 38, and e = 28. What is the mass number of the atom?
Finger [1]

Answer: 66

Explanation: To find the mass number you would have to add the number of protons and the number of neutrons.

3 0
2 years ago
Dos vehículos colisionan. Se sabe que antes del choque el vehículo 1 de masa "m", se desplazaba horizontalmente hacia la derecha
BabaBlast [244]

Answer:

translate? ill edit this later

Explanation:

8 0
2 years ago
Other questions:
  • Which of the following substances is formed during photosynthesis A.carbon dioxide
    7·2 answers
  • Describe how the energy in<br> ocean waves could be transformed into<br> electrical energy.
    7·1 answer
  • What are three signs that a chemical change has taken place
    8·1 answer
  • A battery is connected at its positive end by a wire to the head of an iron nail. The wire then coils aground the nail to its ti
    9·2 answers
  • What does the force of gravity on an object depend on
    14·2 answers
  • A series of five calibration standards 25, 50, 75 and 100 mg/L Potassium is required to be made from a 1000mg/L Potassium standa
    11·1 answer
  • 1. Which of the following qualifies as a Bronsted-Lowry base but not an Arrhenius base?
    13·2 answers
  • Which is a property of barium (Ba)?
    11·1 answer
  • Drag and drop the correct component and reactants to fill in the equation for photosynthesis
    6·1 answer
  • Can someone help me please. Will mark brainliest!<br> Which equation shows an increase in entropy?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!