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
lesya692 [45]
3 years ago
10

Min : sec helium and nickel are classified as _____, which are pure substances that make up all kinds of matter

Chemistry
1 answer:
Sidana [21]3 years ago
4 0

Helium which has a chemical formula of He is considered as a noble gas while Nickel which has a chemical formula of Ni is considered as metallic. Although both have different phases but they are both classified under the general category of “Elements”.

 

answer:

<span>elements</span>

You might be interested in
Which star is hotter,but less luminous, than polaris
steposvetlana [31]
It would be any white dwarf star
6 0
3 years ago
A chemist determined by measurements that 0.050 moles of tin participated in a chemical reaction. Calculate the mass of tin that
stepladder [879]

Answer:

Explanation:

MM of I2 = 2 (127 g) = 254 g/mol

0.065 mol I2 x 254g I₂/ 1 mol I₂  = 16.5 g I2

8 0
3 years ago
Read 2 more answers
Calculate the hydroxide ion consentration of a solution with pH = 3.25. show all calculations leading to your answer.
lidiya [134]
First you calculate the pOH of the solution:

pH+ pOH = 14

3.25 + pOH = 14

pOH = 14 - 3.25

pOH = 10.75

<span>Concentration of [OH]</span>⁻<span> in solution:
</span>
[ OH⁻ ] = 10 ^{-pOH}

[ OH⁻ ]  = 10^ - 10.75

[OH⁻] = 1.778 x 10⁻¹¹ M

hope this helps !


6 0
3 years ago
Which of the following fits the definition of a mineral? a. oil, because it's a liquid, not a solid b. a lab-grown diamond, beca
SVEN [57.7K]

Answer: The answer is C

Explanation:the salt fits the definition of a mineral because it's a naturally occurring compound that has a definite composition and a crystalline structure. It has a crystalline structure because of its repeating pattern

4 0
3 years ago
Para la siguiente reacción química demuestre que cumple con la Ley de la Conservación de la Materia. Recuerde que debe justifica
nikklg [1K]

Answer:

In this chemical reaction, which is considered irreversible, that is why the reaction arrow is ONE and unidirectional and not two in opposite directions, which means reversibility of the reaction.

In summary, if we look closely at the reaction, we observe that the stoichiometric values are balanced in the reaction, therefore there is THE SAME AMOUNT OF REAGENTS AS PRODUCTS.

This phenomenon has to be met in ALL CHEMICAL REACTIONS, the stoichiometric balance is essential for this reaction to be well expressed.

Why is stoichiometric balance so important? Why we indicate that we have the same amount of reagents as products, means that NOTHING IS LOST, EVERYTHING IS TRANSFORMED in the matter of the organic compounds that reacted.

Explanation:

Although if we observe the stoichiometric values well they are not correct with respect to oxygen, therefore it would be necessary to correct that in the chemical reaction, but above we briefly explain why the balancing of the reactions and the relationship they have with the conservation of the mass.

The law of conservation of mass indicates that mass is never lost, but is transformed, like energy, considering that it happens in terrestrial life.

4 0
3 years ago
Other questions:
  • Look at the periodic table.
    8·1 answer
  • How are elements that are gases at room temperature designated in the periodic table
    7·1 answer
  • Which of the following statements about biodiversity is true? a. Changes to biodiversity always positively affect an ecosystem.
    14·1 answer
  • What do we call living things that share characteristics including processes that make life possible?
    6·1 answer
  • Move the red warning icon to focus of the earthquake.
    10·1 answer
  • What is the speed of an electromagnetic wave that has a wavelength of 8.6 x 10-5 m?
    8·1 answer
  • How was your day????????​
    10·2 answers
  • State the special characteristics of maxwell-boltzman statistics​
    5·1 answer
  • What is the standard electrode potential for a galvanic cell constructed in the appropriate way from these two half-cells?
    6·2 answers
  • How does the arrangement of atoms or molecules in a gas differ from the arrangements in liquids and solids?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!