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
stiv31 [10]
3 years ago
6

PLEAASSEEE Explain, really confused

Chemistry
1 answer:
Alex17521 [72]3 years ago
4 0
We can get the mass of the lead metal by calculating the difference between the Mass of evaporating dish and lead metal and the mass of empty evaporating dish. The mass of lead metal is 1.9627 grams. The mass of sulfide is obtained by calculating the difference between Mass of evaporating dish and lead sulfide and the mass of evaporating dish and lead metal. The mass of sulfur added is 0.558 grams. We convert masses to moles. Lead is 0.0093 moles while sulfur is 0.017 moles. We divide each with the less amount between the two. Hence, lead is 1 an sulfur 1.83 or 2. The formula is PbS2 or lead (IV) sulfide. 
You might be interested in
what is the volume of aluminum with the mass of 0.85g
Mrrafil [7]

Answer:

If the mass of a sample of aluminum foil is known, then it is possible to calculate the volume of the foil. In general volume is the product of length times width times height of an object. If we know the length and width of a piece of foil, we can then determine its height, or thickness.

sorry if wrong

3 0
3 years ago
Read 2 more answers
Tri
Phantasy [73]

Answer:

If you touch the knob of a positively charged electroscope with another positively charged object,the leaves of the electroscope would remain apart.

3 0
3 years ago
Students working in lab accidentally spilled 17 l of 3.0 m h2so4 solution. they find a large container of acid neutralizer that
jek_recluse [69]

Answer is: 8568.71 of baking soda.

Balanced chemical reaction: H₂SO₄ + 2NaHCO₃ → Na₂SO₄ + 2CO₂ + 2H₂O.

V(H₂SO₄) = 17 L; volume of the sulfuric acid.

c(H₂SO₄) = 3.0 M, molarity of sulfuric acid.

n(H₂SO₄) = V(H₂SO₄) · c(H₂SO₄).

n(H₂SO₄) = 17 L · 3 mol/L.

n(H₂SO₄) = 51 mol; amount of sulfuric acid.

From balanced chemical reaction: n(H₂SO₄) : n(NaHCO₃) = 1 :2.

n(NaHCO₃) = 2 · 51 mol.

n(NaHCO₃) = 102 mol, amount of baking soda.

m(NaHCO₃) = n(NaHCO₃) · M(NaHCO₃).

m(NaHCO₃) = 102 mol · 84.007 g/mol.

m(NaHCO₃) = 8568.714 g; mass of baking soda.

8 0
3 years ago
Which shows the temperatures of three substances, in order, from greatest to least?water vapor, ice, waterice, water, water vapo
Troyanec [42]
Water vapor >> water >> ice
Water vapor is the gaseous form of water, only achieved when water is heated to a boil or under certain higher pressure circumstances. Water is a liquid in temperatures between 0-100°C (32-212°F). Ice, the solid form of water, occurs when water freezes, at temps below 0°C (32°F).
7 0
4 years ago
Read 2 more answers
What type of allele masks the expression of the recessive allele?
aniked [119]
The Dominant trait or allele masks the recessive because it is dominant. an easy way to remember this is how the lead wolf (dominant alleles) shows it's dominance over the rest of the pack (the recessive alleles)
8 0
4 years ago
Other questions:
  • A sample of carbon-12 has a mass of 6.00 g. How many atoms of carbon-12 are in the sample?
    14·2 answers
  • Where is the atmosephere the most dence
    12·2 answers
  • Which of these is a physical property? a.flammability b. pH value c. reactivity with oxygen d. smell
    12·1 answer
  • Logs in a fire, and charged batteries are examples of?
    14·1 answer
  • Question 5<br> Which of the following is not an example of mutualism?
    12·2 answers
  • When a substance is changing state, temperature stays the same at the melting and boiling point is this true or false
    5·1 answer
  • Can you think of other solutions that might be<br> acidic?
    13·2 answers
  • What causes mountains to form
    11·1 answer
  • How many moles of H2 would be required to produce 37.0 moles of water?
    13·1 answer
  • Please help me with this question
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!