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
jasenka [17]
3 years ago
6

Name a certain rock contains large, jagged pieces of other rocks,cemented fine particles. what type of rock is this ?

Chemistry
1 answer:
natita [175]3 years ago
3 0

should be hemanite and brick. hope this helps.
You might be interested in
A force that is opposite to motion of a falling object?
kenny6666 [7]

Answer:

Sliding friction: A friction force that opposes the motion of an objects as it slides over a surface.

7 0
3 years ago
There are two different compounds of sulfur and fluorine.
weqwewe [10]
Atomic mass of F: 19.0 g/mol

Atomic mass of S: 32.1 g/mol

1.18 g F = [1.18 g / 19.0 g / mol] = 0.062  mol F

1 g S =  1 g/ 32.1 g/mol = 0.031  mol S

Divide by 0.031

0.062 mol F / 0.031 = 2  mol F

0.031 mol S / 0.031 = 1 mol S

SF2 Then X = 2

Verification:
F2 = 2*19.0 g = 38 g F
S = 32.1 g

36 gF / 32.1 g S = 1.18 g F / g S



7 0
3 years ago
If 28.0 grams of Pb(NO3)2 react with 18.0 grams of NaI, what mass of PbI2 can be produced? Pb(NO3)2 + NaI → PbI2 + NaNO3
ss7ja [257]

Answer:- 27.7 grams of PbI_2 are produced.

Solution:- The balanced equation is:

Pb(NO_3)_2+2NaI\rightarrow PbI_2+2NaNO_3

let's convert the grams of each reactant to moles and calculate the grams of the product and see which one gives least amount of the product. This least amount would be the answer as the least amount we get is from the limiting reactant.

Molar mass of Pb(NO_3)_2 = 207.2+2(14.01)+6(16)  = 331.22 gram per molmolar mass of NaI = 22.99+126.90 = 149.89 gram per molMolar mass of [tex]PbI_2 = 207.2+2(126.90) = 461 gram per mol

let's do the calculations for the grams of the product for the given grams of each of the reactant:

28.0gPb(NO_3)_2(\frac{1molPb(NO_3)_2}{331.22gPb(NO_3)_2})(\frac{1molPbI_2}{1molPb(NO_3)_2})(\frac{461gPbI_2}{1molPbI_2})

= 39.0gPbI_2

18.0gNaI(\frac{1molNaI}{149.89gNaI})(\frac{1molPbI_2}{2molNaI})(\frac{461gPbI_2}{1molPbI_2})

= 27.7gPbI_2

From above calculations, NaI gives least amount of PbI_2, so the answer is, 27.7 g of PbI_2 are produced.

8 0
3 years ago
Write a chemical equation for the following decomposition reaction.
Aneli [31]
<span>the chemical equation will be Ni(OH)2(s)------>heat---> NiO(s) + H2O(g)
</span><span>we know that the heat supplied to decompose the compound.In the result the product H2O is assumed to be in the vapor state so that is gas.

hope it helps
</span>
7 0
3 years ago
Electrolysis can be used for all of the following, except A. separating metals from ores. B. plating objects with metal coatings
NemiM [27]

The answer is D. recharging batteries.

6 0
3 years ago
Other questions:
  • Calculate the molar mass<br> FeCl3 <br> Fe2(SO4)3 <br> PbO <br> PbO2 <br> Pb3O4
    8·1 answer
  • Which element is most reactive and why?<br>Fe<br>Mg<br>Pb<br>Zn​
    11·1 answer
  • What is the oxidation state of each element in the species Mn(ClO4)3
    5·2 answers
  • How people relate to one another and influence each other’s behavior​
    15·1 answer
  • Please help <br><br>look at the image<br>which one is it
    12·1 answer
  • A solution of pentane and ethanol (CH3CH2OH)that is 50.% pentane by mass is boiling at 57.2°C. The vapor is collected and cooled
    11·1 answer
  • What process produces the sediments that ultimately lead to soil formation
    6·2 answers
  • You have the compound CH4. The first element is a
    6·1 answer
  • What is empirical formula?​
    12·2 answers
  • which solute would you expect to most lower the freezing point of water? which solute would you expect to most lower the freezin
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!