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
Marina86 [1]
3 years ago
8

PLEASE HELP ME!!!!!!!!!!!!!!!!!! FILL IN THE BLANKS !!!25 POINTS AND BRAINLIEST

Chemistry
2 answers:
KonstantinChe [14]3 years ago
3 0

Answer:

help you with what I don't see anything

Georgia [21]3 years ago
3 0

Answer:

free points thanks.

forgot pic

Explanation:

You might be interested in
PLEASE HELP----
balandron [24]
Actual yield of Fe2(So4)3 = 18.5g

2FePo4 + 3Na2SO4 -> Fe2(SO4)3 + 2Na3PO4

Mole of FePO4 = mass of it / its molar mass =
25 g / (55.8 + 31 + 16*4) = 0.166 mol

every 2 mole of FePO4 will form 1 mole of Fe2(SO4)3

Mole of Fe2(SO4)3 produced = 0.166 / 2 = 0.0829 mol

0.0829 * (55.8*2 + 3*(32.1+ 16*4)) = 33.148 g of Fe2(SO4)3

18.5 / 33.148 * 100 = 55.8%

3 0
3 years ago
What kind of questions CANNOT be answered by chemistry?
Tamiku [17]

Answer:

Why does matter exist?

Explanation:

7 0
3 years ago
Read 2 more answers
Use bond energies to calculate ΔHrxn Δ H r x n for the reaction. 2H2(g)+O2(g)→2H2O(g) 2 H 2 ( g ) + O 2 ( g ) → 2 H 2 O ( g )
Olenka [21]

Answer:

\large \boxed{\text{-486 kJ}}

Explanation:

You calculate the energy required to break all the bonds in the reactants.

Then you subtract the energy needed to break all the bonds in the products.

                      2H₂   +   O₂ ⟶ 2H-O-H

Bonds:          2H-H    1O=O       4H-O

D/kJ·mol⁻¹:     436      498          464

\begin{array}{rcl}\Delta H & = & \sum{mD_{\text{reactants}}} - \sum{nD_{\text{products}}}\\& = & 2 \times 436 +1 \times 498 - 4 \times 464\\&=& 1370 - 1856\\&=&\textbf{-486 kJ}\\\end{array}\\\text{The enthalpy of reaction is $\large \boxed{\textbf{-486 kJ}}$}.

3 0
3 years ago
Identify the followings as a element or compound c12 h22o11
Anastaziya [24]

Answer:

Compound

Explanation:

The given specie is a compound.

A compound is made up of two or more kinds of atoms/elements joined together in a definite grouping.

  • The properties of a compound are distinct and different from those of the individual elements that are combined in its make-up.
  • For this given specie, the elements are carbon, hydrogen and oxygen.
  • So, this is a compound.

Elements are distinct substances that cannot be split - up into simpler substances. Such substances consist of only one kind of atom

6 0
3 years ago
Can someone please help me ASAP
Natalka [10]
The answer is D. Primary
4 0
4 years ago
Other questions:
  • Pb12 (s) = Pb+2 (aq)<br> +<br> 2 ]- (aq)
    5·1 answer
  • What is the formula for diarsenic pentoxide
    11·1 answer
  • Ptolemys date of theory! PLEASE HELP
    5·1 answer
  • a bar of gold is melted into liquid the liquid is then poured into a mold to make pieces of jewelry is the process a chemical ch
    10·1 answer
  • A glass was filled with 10 ounces of water, and 0.01 ounce of the water evaporated each day during a twenty-day period.  What pe
    13·1 answer
  • Balance this equation
    15·1 answer
  • Chlorine has 17 total electrons with electron configuration 1s^2 2s^2 2p^6 3s^2 3p^5. What are the first two quantum numbers for
    11·1 answer
  • For the wild type (unmutated) enzyme, you measure a rate of p-nitrophenol release by the change in absorbance at 405 nm (for the
    13·1 answer
  • Juliet has asthma and regularly uses inhalers and a nebulizer, a machine to help improve her breathing with inhaled medicine. Ju
    14·1 answer
  • What’s the correct answer answer asap for brainlist
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!