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
Licemer1 [7]
3 years ago
6

10.0 grams of octane are burned in a bomb calorimeter containing 2.00 × 102 g h2o. if the water temperature increases from 25.00

oc to 37.00oc, how much energy was released by the system?
Chemistry
1 answer:
tigry1 [53]3 years ago
3 0
ΔH=MCΔT
M : the mass of water (2.00x10^2)
C : water specific heat capacity (4.18 or 4.2)
ΔT : tempreture change 
so energy (J) released into the water is = (200 x 4.18 x 12) = 10032J
you can convert that to KJ : 10032 / 1000 = 10.032KJ

so the energy released by 10g of octane is 10032J or 10.032KJ

hope that helps
You might be interested in
Number of grams in four moles of BaCO3
Irina-Kira [14]
This compound is also known as Barium Carbonate. 1 mole is equal to 1 moles BaCO3, or 197.3359<span> grams.</span>
5 0
3 years ago
How many valance electrons are in an Adam of each element in group 15 in the periodic table
GuDViN [60]

Answer:5

Explanation:The pnictogen group, or nitrogen group, is located in column 15 of the periodic table. This family consists of the elements nitrogen, phosphorus, arsenic, antimony, bismuth, and ununpentium (N, P, As, Sb, Bi, and Uup, respectively). Each member of this family contains five valence electrons.

5 0
3 years ago
Read 2 more answers
How many liters of oxygen gas are there in 45.0g O, at 0 degrees C and 1 atm of pressure? make sure to round to the correct numb
ZanzabumX [31]

Answer:

You can use the pdf to help you

Explanation:

Download pdf
3 0
3 years ago
Isn’t urgent the first 3 will be marked BRAINIEST
bearhunter [10]

Answer:

Al2(SO4)3 and Mg(OH)2

Explanation:

1. Al has a charge of 3-, and SO4 of 2-

when you cross multiply the charges you get

Al2 and (SO4)3

*the reason theres a bracket around the sulfate ion is that the charge 3 is not for oxygen only, but the entire sulphate ion*

Hence, Al2(SO4)3

2. Mg has a charge of 2- and OH of 1-

again cross multiply

Mg (you dont need to add the 1) and (OH)2

again, the bracket around OH means the charge appiles to Oxygen AND hydrogen

hence, Mg(OH)2

7 0
3 years ago
Read 2 more answers
What are the coefficients when the chemical equation below is balanced?
timofeeve [1]

Answer:

C is correct

Explanation:

4 0
3 years ago
Other questions:
  • The ksp of beryllium hydroxide, be(oh)2, is 6.92 × 10-22. calculate the molar solubility of this compound.
    12·1 answer
  • How many neutrons does element X have if its atomic number is 23 and its mass number is 87?
    14·2 answers
  • Describe the preparation of 2.000 L of 0.0500 M AgNO3 (169.87 g/mol) from the primary-standard-grade solid.
    8·1 answer
  • The point where the blue line intercepts the temperature axis is…
    13·2 answers
  • If 13.7 grams of manganese oxide reacts with excess hydrogen chloride gas, how many grams of water are formed?
    8·1 answer
  • A compound contains 74.2 g Na and 25.8 g O. Determine the Empirical Formula for this compound
    9·2 answers
  • How does the theory of plate tectonics help geologists today?
    5·1 answer
  • The reversible reaction, 4HCl(g) + Si (s) ⇌ SiCl4 (l) + 2H2 (g) , would be classified as a ______________ reaction.
    12·1 answer
  • When 18.0 g H20 is mixed with 33.5 g Fe, which is the limiting reactant?
    12·1 answer
  • An oxide of P contains 50% by mass of P. Its Relative molecular mass is 64. The molecular formula of the oxide is (P=32; O=16)
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!