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
marissa [1.9K]
3 years ago
11

A sample of hexane (C6H14) has a mass of 0.580 g. The sample is burned in a bomb calorimeter that has a mass of 1.900 kg and a s

pecific heat of 3.21 J/giK. What amount of heat is produced during the combustion of hexane if the temperature of the calorimeter increases by 4.542 K?
A. 8.46 kJ
B. 16.1 kJ
C. 27.7 kJ
D. 47.8 kJ
Chemistry
1 answer:
MatroZZZ [7]3 years ago
6 0

Answer:

27.7 KJ

Explanation:

Q= mC dT

m= 1900 g+0.580 g= 1900.58 g

Q= (1900.58 g * 3.21 KJ/ gK* 4.542 K)

Q=27710 J= 27.7 KJ

You might be interested in
Pleaseee helpppp!!!!!!!!
Katarina [22]

Answer:

a covalent would be the two that are nonmetals

7 0
3 years ago
What is the density of an object with 525 grams and a volume of 15cm3?
Hunter-Best [27]

Answer: 35 g/cm

Explanation:

Density equals mass over volume. 525 divided by 15 is 35

7 0
3 years ago
Read 2 more answers
2. Write the chemical equations for the neutralization reactions that occurred when HCL and NaOH were added to the buffer soluti
lutik1710 [3]

Answer:

HCI(aq)+CH3COONa(s) ----> CH3COOH(aq)+NaCl(s)

NaOH(aq)+CH3COOH(aq) ----> CH3COONa(s)+H2O(l)

Explanation:

A buffer is a solution that resists changes in acidity or alkalinity. A buffer is able to neutralize a little amount of acid or base thereby maintaining the pH of the system at a steady value.

A buffer may be an aqueous solution of a weak acid and its conjugate base or a weak base and its conjugate acid.

The equations for the neutralizations that occurred upon addition of HCl or NaOH are;

HCI(aq)+CH3COONa(s) ----> CH3COOH(aq)+NaCl(s)

NaOH(aq)+CH3COOH(aq) ----> CH3COONa(s)+H2O(l)

5 0
3 years ago
How many atoms are in 1.75 moles of CHCl?
jok3333 [9.3K]
1.75 moles ChCl3 x (6.02 x 10 ^-23) / 1 mole = 1.0535 x 10^-22 atoms.

hope this was helpful :)
8 0
3 years ago
For the following reaction, C6H12O6 and O2 are the
erastovalidia [21]
Thats burning of glucose as fuel in the cells. It generates heat and is an exothermic reaction.  In Mitochondria, which act as furnaces, the fuel helps generate heat for the cells of the body.
8 0
3 years ago
Other questions:
  • Which graph shows the relationship between the temperature and volume of agas according to Charles's law?Volume vs. Temperature
    13·1 answer
  • Enter a balanced equation for the reaction between aqueous lead(II) nitrite and aqueous potassium bromide to form solid lead(II)
    10·1 answer
  • Which of the following substances contains a nonpolar covalent bond?
    7·1 answer
  • HELP!!!!! URGENT!!!!!!!!!!!!!!!!!!!!!
    10·1 answer
  • Can someone explain me why the molar mass become 90.12 g/mol and when I calculated it's 90 g/mol?​
    12·1 answer
  • What is the molar mass of CH 4 ? (C = 12.01g / m * o * l, H = 1.008g / m * o * l)
    5·2 answers
  • A system in which heat moves through the system
    8·1 answer
  • What is the density of a liquid is 67.1 mL of liquid weighs 55.221 g
    9·1 answer
  • Which can be excluded from the list of underground materials that holds water in the Ogallala aquifer?
    13·1 answer
  • Calculate the volume of an<br> object with the following<br> dimensions:<br> 4 cm x 15 cm x 5 cm
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!