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
valentina_108 [34]
3 years ago
9

Although tom was a poor student, he studied very well

Chemistry
1 answer:
Aleks04 [339]3 years ago
3 0
Tom. The ‘T’ should be in capital. Every sentence should end with a full stop ‘.’ . This also has nothing to do with Chemistry. So yeah. Mark me brainliest please.
You might be interested in
Using standard reduction potentials from the ALEKS Data tab, calculate the standard reaction free energy for the following redox
stealth61 [152]

Answer:

-973 KJ

Explanation:

The balanced reaction equation is;

N2H4(aq) + 2Cl2(g) + 4OH^-(aq)---------> 4Cl-(aq) + 4H ^+(aq) + 4OH^-(aq) + N2(g)

Reduction potential of hydrazine = -1.16 V

Reduction potential of chlorine = 1.36 V

From;

E°cell= E°cathode - E°anode

E°cell= 1.36 - (-1.16)

E°cell= 2.52 V

∆G°=- nFE°cell

n= number of moles of electrons = 4

F= Faraday's constant = 96500 C

E°cell = 2.52 V

∆G°=- (4 × 96500 × 2.52)

∆G°= -972720 J

∆G°= -972.72 KJ

7 0
3 years ago
During a combustion reaction, 9.00 grams of oxygen reacted with 3.00 grams of CH4.
Monica [59]

Answer:

0.74 grams of methane

Explanation:

The balanced equation of the combustion reaction of methane with oxygen is:

  • CH₄ + 2 O₂ → CO₂ + 2 H₂O

it is clear that 1 mol of CH₄ reacts with 2 mol of O₂.

firstly, we need to calculate the number of moles of both

for CH₄:

number of moles = mass / molar mass = (3.00 g) /  (16.00 g/mol) = 0.1875 mol.

for O₂:

number of moles = mass / molar mass = (9.00 g) /  (32.00 g/mol) = 0.2812 mol.

  • it is clear that O₂ is the limiting reactant and methane will leftover.

using cross multiplication

1 mol of  CH₄ needs → 2 mol of O₂

???  mol of  CH₄  needs → 0.2812 mol of O₂

∴ the number of mol of CH₄ needed = (0.2812 * 1) / 2 = 0.1406 mol

so 0.14 mol will react and the remaining CH₄

mol of CH₄ left over = 0.1875 -0.1406 = 0.0469 mol

now we convert moles into grams

mass of CH₄ left over = no. of mol of CH₄ left over *  molar mass

                                    = 0.0469 mol * 16 g/mol = 0.7504 g

So, the right choice is 0.74 grams of methane

3 0
3 years ago
Group 18 noble gases are relatively inert because *
choli [55]

Answer:I believe its A. There noble gasses so there happy with there electron count!

Explanation:

3 0
3 years ago
Can someone help me with these two questions
sergiy2304 [10]
4. The pressure of the inner core is higher than the outer core

5. The coolest layers are farthest from the core
6 0
3 years ago
Concentrated hydrochloric acid<br> dilute sulfuric acid chemical equation?
ankoles [38]
H2SO4 (1) H20 (g) + SO3 (g)
5 0
2 years ago
Other questions:
  • The enthalpy of vaporization of liquid water at 100°C is 2257 kJ/kg. Determine the enthalpy for apordato of iuod eeat capacity o
    14·1 answer
  • Magnesium ions carry a 2+ charge and chloride ions carry a 1- charge. what is the chemical formula for the ionic compound magnes
    5·1 answer
  • What are the units for density
    5·1 answer
  • element x is a neutral element and has 39 protons. what element is it and how many electrons does it have? (use the periodic tab
    5·1 answer
  • An italian bicycle has its frame size given as 62 cm. What is the grame size in inches
    7·1 answer
  • What is the molar mass of fluorine, F2?
    8·2 answers
  • Find the molar mass of potassium dichromate, K2Cr2O7
    13·1 answer
  • When people walked on the Moon, they found that they could jump higher than they could back on Earth. Why is this true?
    5·1 answer
  • Calculate the percentage of limestone that dissolved from each solution. Start by subtracting the final mass from the initial ma
    13·1 answer
  • Which material property is most directly related to the x-axis value at the x-intercept of the interatomic force versus distance
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!