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
koban [17]
3 years ago
12

What kinds of materials can laboratories test?

Chemistry
1 answer:
Jet001 [13]3 years ago
7 0
All. It depends on the lab setup, equipment, and expertise.
You might be interested in
Consider an enzymatic reaction in which the initial concentration of substrate is low. If the amount of enzyme is held constant,
Tanzania [10]

Answer:69.8

Explanation:

3 0
1 year 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
If the same materials are used to build a voltaic cell and an electrolytic cell, how would the chemical reactions compare?
nadya68 [22]
In the electrolytic cell, depending on the polarity of the battery, either a more vigorous reaction (though the same as the voltaic cell) would occur, or the reverse would.
3 0
3 years ago
What is the democritus findings?
Volgvan

nvm

nvm

nvm

nvm

nvm

nvm

nvm

4 0
3 years ago
What the 4 main parts to a flower<br> science i cant find it in the supject
kondaur [170]

stem, roots, leaves and flower

I hope it helps

5 0
2 years ago
Read 2 more answers
Other questions:
  • Draw the Lewis structure of H2O. Include any nonbonding electron pairs. Draw the molecule by placing atoms on the grid and conne
    7·1 answer
  • Iron (III) oxide is formed when iron combines with oxygen in the air. How many grams of Fe2O3
    14·1 answer
  • Which sphere exists because of there is liquid iron as part of the earth's core? A.hydrosphere B.atmosphere C.magnetosphere D.li
    11·1 answer
  • What is the percent composition of nitrogen in sodium nitride
    6·1 answer
  • Please help me with this thank you !!
    6·1 answer
  • Is an element with 6 elecrons, 6 protons and 6 neutroms an atom, ion or isotope​
    9·2 answers
  • <img src="https://tex.z-dn.net/?f=%20%2012.046%20%5Ctimes%20%7B10%7D%20%5E%7B25%7D%20" id="TexFormula1" title=" 12.046 \times {
    10·1 answer
  • What happens as liquid water boils?
    14·1 answer
  • When light waves pass through solids, the speed of the wave ___________.
    11·1 answer
  • What is the common uses of bases
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!