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
iVinArrow [24]
3 years ago
10

compound 1 contains 15.0g of hydrogen and 120.0g oxygen. What is the percent compound of each element?

Chemistry
1 answer:
allsm [11]3 years ago
8 0

Note down the formula below

\boxed{\sf Mass\%\;of\; element=\dfrac{Mass\:of\:the\: element}{Mass\;of\:the\: compound}\times 100}

Mass of the compound

\\ \sf\longmapsto 15+120=135g

Mass % of Hydrogen:-

\\ \sf\longmapsto \dfrac{15}{135}\times 100

\\ \sf\longmapsto \dfrac{1}{9}\times 100

\\ \sf\longmapsto 11.1\%

Mass % of Oxygen:-

\\ \sf\longmapsto \dfrac{120}{135}\times 100

\\ \sf\longmapsto \dfrac{8}{9}\times 100

\\ \sf\longmapsto 88.9\%

You might be interested in
How many significant figures are in 1.009 L
NeTakaya
4


Numbers above zero are significant, as well as any zeros that appear in between two non-zero numbers.
8 0
3 years ago
Which of the following variables has the least effect on the rate a substance dissolved in a container of water?
Lelechka [254]
I think it’s A. The force of the stirring
4 0
3 years ago
AV<br> 5. How many grams are in 0.52 moles of H3PO4?
Hoochie [10]

Answer:

50.96g

Explanation:

Given parameters:

Number of moles of H₃PO₄   = 0.52moles

Unknown:

Mass of the compound  = ?

Solution:

To find the mass of the compound:

    Mass  = number of moles x molar mass of H₃PO₄

Molar mass of H₃PO₄ = 3(1) + 31 + 4(16)  = 98g/mol

  Mass  = 0.52 x 98  = 50.96g

3 0
3 years ago
5.If 30mL of 0.5M NaOH(aq) was used to neutralize 10mL of HCl(aq), what is the concentration of the acid? Show work.
Zolol [24]

Answer:

0.15M

Explanation:

NaOH + HCl -->NaCl + H2O

moles of NaOH reacted with HCl

(0.5 × 30)/1000 = 1.5 × 10^ -3

so the moles of HCl reacted with NaOH

1.5 × 10^ -3

concentration of HCl = ( 1.5 × 10^ -3)/10 ×1000

7 0
3 years ago
Watch the animation and select the interactions that can be explained by hydrogen bonding. Check all that apply.
nydimaria [60]

Answer:

c. Ice, H₂O, has a solid structure with alternating H−O interactions.

e. HF has a higher boiling point than HCl.

Explanation:

For molecules to interact through hydrogen bonding, it is required that there is an H atom bonded to a more electronegative atom, such as N, O or F.

<em>Select the interactions that can be explained by hydrogen bonding. Check all that apply. </em>

<em> a. CH₄ molecules interact more closely in the liquid than in the gas phase.  </em>NO. The electronegativity of C is not high enough to form hydrogen bondings.

<em>b. HF is a weak acid neutralized by NaOH. </em> NO. This reaction occurs in water and it is better explained by ion-ion forces.

<em>c. Ice, H₂O, has a solid structure with alternating H−O interactions. </em> YES. This structure is a consequence of the hydrogen bonding.

<em>d. H₂Te has a higher boiling point than H₂S.</em>  NO. The electronegativities of Te and S are not high enough to form hydrogen bondings.

<em>e. HF has a higher boiling point than HCl.</em> YES. The stronger hydrogen bonding interactions in HF explain the higher boiling point.

6 0
3 years ago
Other questions:
  • Which statement correctly describes a physical change?
    13·1 answer
  • Solve the ideal gas law equation for pressure.
    9·1 answer
  • Lead(II) nitrate is added slowly to a solution that is 0.0800 M in Cl− ions. Calculate the concentration of Pb2+ ions (in mol /
    8·1 answer
  • Is a faded picture a chemical or physical change?
    11·2 answers
  • Help me pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeee this 10 points answer the ones i didnt answer
    10·1 answer
  • What do an electron and neutron have in common?
    7·2 answers
  • What is the molarity of 5.39 grams of CaCl2 dissolved in 609 mL of water? (molar mass = 110.98 g/mol)
    5·1 answer
  • Based on what you’ve determined regarding one mole of sand and one mole of water, which statements must be correct?
    15·1 answer
  • How many grams are in 4.58x1023 atoms of oxygen?
    12·1 answer
  • 1) A mixture of anhydrous sodium carbonate and sodium hydrogencarbonate of mass 10.000 g was heated until it reached a constant
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!