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
alexandr1967 [171]
3 years ago
15

Which statement about elements is FALSE?

Chemistry
2 answers:
Olenka [21]3 years ago
5 0

The correct answer is B. There are about 1,000 elements found in nature.

Explanation:

In chemistry, an element refers to a substance that contains the same kind of atoms, especially in terms of the number of protons. Examples of elements include substances like hydrogen, nitrogen, sodium, zinc, among others. Additionally, to 2019 scientists have identified around 118 elements that include both elements naturally formed and some that were created in laboratories such as the meitnerium that was created in 1982. According to this, it is false there are about 1000 elements because for now there are only 118.

uranmaximum [27]3 years ago
3 0
your answer is Option B
there are 90 elements found naturally so option B statement is incorrect
HOPE THIS WILL HELP YOU
You might be interested in
What two things are conserved in a chemical reaction?
Sloan [31]
Mass and atoms are the properties conserved in every ordinary chemical reaction.

Hope this helps!
3 0
3 years ago
Which of the following statements explains why atoms are always neutral in charge
alex41 [277]
Answer see because there is a lack of potassium peanuts and walnuts also help the gravitational pull moons rocks different one but because of this energy conversion is the after effect of the camera being shot
7 0
3 years ago
We get 1700 Tonnes of Ammonia every day. How many tonnes of 63% Nitric acid we can get?
jeyben [28]
There are 3 equations involved in manufacturing Nitric Acid from Ammonia. 

First the ammonia is oxidized:
4NH3 + 5O2 = 4NO + 6H2O

Then for the absorption of the nitrogen oxides.
2NO + O2 = N2O4

Lastly, the N2O4 is further oxidized into Nitric acid.
3N2O4 + 2H2O = 4HNO3 + 2NO

Then run stoichiometry through these equations.
The first equation produces roughly 271,722,938 grams of NO
The second equation produces roughly 416,606,944 grams of N2O4
The last equation produces roughly 380,412,294 grams of HNO3 (nitric acid)

Convert the exact number back into tons, and your answer is: <span>419.332775 tons.
</span>
Rounded, I'm going to say that's 419.33 tons.
Hope this helps! :)

Also, it seems that commercially, Nitric Acid is commonly made by bubbling NO2 into water, rather than using ammonia.
 
8 0
3 years ago
A common fuel additive that is composed of C, H, and O enhanced the performance of gasoline began being phased out in 1999 becau
spayn [35]

Answer:

C₅ H₁₂ O

Explanation:

44 g of CO₂ contains 12 g of C

30.2 g of CO₂ will contain 12 x 30.2 / 44 = 8.236 g of C .

18 g of H₂O contains 2 g of hydrogen

14.8 g of H₂0 will contain 1.644 g of  H .

total compound = 12.1 out of which 8.236 g is C and 1.644 g is H , rest will be O

gram of O = 2.22

moles of C, O, H in the given compound =  8.236 / 12 , 2.22 / 16 , 1.644 / 1

= .6863 , .13875 , 1.644

ratio of their moles = 4.946 : 1 : 11.84

rounding off to digits

ratio = 5 : 1 : 12

empirical formula = C₅ H₁₂ O

6 0
3 years ago
Blank are atoms that carry an electric charge
vampirchik [111]
Ions. Im 99.9% sure haha. 
8 0
3 years ago
Other questions:
  • 3CuCl2 + 2Al = 2AlCl3 + 3Cu using the molar ratio between the limiting reactant (aluminum) and the product copper, determine the
    9·1 answer
  • Find degenerate orbitals 3dxy, 2px, 4dz2, 3dyz, 3pz,3dxz, 4sm​
    13·1 answer
  • How is an area's topography determined
    13·2 answers
  • I know the correct answer is either a or d. Can anyone explain which one it is and why? CH3C ≡ CCH2CH2Cl is named: a. 1-chloro-3
    12·1 answer
  • If the ΔH for
    14·1 answer
  • 4. DNA replication:
    5·2 answers
  • Terry usually rides his bike at 15 mph. If his riding speed is reduced by 3 mph, how far can he ride in 1.7 hours? ___miles​
    13·2 answers
  • Which type of Symbiotic Relationship is described below?
    9·1 answer
  • What is the molarity of a NaOH solution if 48.0 mL of a 0.220 M H2SO4 solution is required to neutralize a 25.0-mL sample of the
    9·1 answer
  • How do i find the name of an element
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!