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
kotegsom [21]
3 years ago
7

In the formula for water (H2O) what does the subscript 2 indicate?

Chemistry
1 answer:
Alenkasestr [34]3 years ago
8 0
The 2 indicates the amount of hydrogen there is. In this case there are two atoms of hydrogen. The subscript will correspond to the “letter” (element symbol) right before it.
You might be interested in
Dilute hydrochloric acid is gradually added to a solution that is buffered at pH 4.76. How will the pH of the solution be affect
aleksley [76]

the answer is C.

The PH will initially remain close to 4.76 then decrease quickly when the buffer capacity is exceeded

3 0
3 years ago
In the reaction Zn H 2SO 4→ ZNSO4 + H2, which, if any element is oxidized
Sedbober [7]

Answer:

I hope this answer is correct

Explanation:

This is an oxidation-reduction (redox) reaction:

Zn0 - 2 e- → ZnII (oxidation)

2 HI + 2 e- → 2 H0 (reduction)

Zn is a reducing agent, H2SO4 is an oxidizing agent.

Reactants:

Zn

Names: Zinc source: wikidata, accessed: 2019-09-07, Zinc powder (pyrophoric) source: ICSC, accessed: 2019-09-04, Zn source: wikidata, accessed: 2019-09-07

Appearance: Grey-to-blue powder source: ICSC, accessed: 2019-09-04

H2SO4 – Sulfuric acid source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-07source: NIOSH NPG, accessed: 2019-09-02

Other names: Oil of vitriol source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-07source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Sulfuric acid, concentrated (> 51% and < 100%) source: ICSC, accessed: 2019-09-04, H2SO4 source: wikidata, accessed: 2019-09-07

Appearance: Clear, colorless liquid source: wikipedia, accessed: 2019-09-27; Odourless colourless oily hygroscopic liquid source: ICSC, accessed: 2019-09-04; Colorless to dark-brown, oily, odorless liquid. [Note: Pure compound is a solid below 51°F. Often used in an aqueous solution.] source: NIOSH NPG, accessed: 2019-09-02

Products:

ZnSO4 – Zinc sulfate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04

Other names: White vitriol source: wikipedia, accessed: 2019-09-27, Goslarite source: wikipedia, accessed: 2019-09-27, Zinc sulfate (1:1) source: wikidata, accessed: 2019-09-02

Appearance: White powder source: wikipedia, accessed: 2019-09-27; Colourless hygroscopic crystals source: ICSC, accessed: 2019-09-04

H2

Names: Dihydrogen source: wikidata, accessed: 2019-09-07, Hydrogen source: ICSC, accessed: 2019-09-04source: wikidata, accessed: 2019-09-07, H2 source: wikidata, accessed: 2019-09-07

7 0
3 years ago
Evaporation is ________. check all that apply. check all that apply. an endothermic process sometimes a warming process always a
Neporo4naja [7]
A cooling process and an exothermic process
3 0
3 years ago
How much energy is required to melt 2kg of aluminium
ki77a [65]
800kj----------




800kj----------
6 0
3 years ago
Please answer this it's due today!!!!!!
storchak [24]

Answer:

C

Explanation:

The net gain is the difference between how much you start off with and how much you end up with.

3 0
3 years ago
Other questions:
  • Describe light with respect to its speed and its dual nature as both a wave and a particle.
    12·1 answer
  • Scenario
    8·1 answer
  • If measurements of a gas are 100L and 300 kilopascals and then the gas is measured a second time and found to be 75L, describe w
    6·1 answer
  • Calculate the ph of a dilute solution that contains a molar ratio of potassium acetate to acetic acid (pka ???? 4.76) of (a) 2:1
    15·1 answer
  • Which substance is an inorganic compound
    8·1 answer
  • Ocean life is changing due to<br>This is happening because<br>This is causing<br>because​
    12·1 answer
  • When steam condenses into water, __________. When steam condenses into water, __________. heat is given off by the water no heat
    10·1 answer
  • Complete the sentence.
    7·1 answer
  • Hi, my question is not answer, please
    9·1 answer
  • What are some<br> double replacement reactions you see every day
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!