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
Tatiana [17]
2 years ago
15

What is the specific heat of a substance if 1450 calories are required to raise the temperature of a 240g sample by 20℃?

Chemistry
1 answer:
bazaltina [42]2 years ago
5 0

Answer:

6960 J/kg°C

Explanation:

specific heat= mass×specific heat capacity×increase in temperature

specific heat= 0.240×1450×20= 6960 J/kg°C

hope it helps!

You might be interested in
An acetylide anion is more stable than either a vinylic or alkyl anion due to Group of answer choices the greater stability of a
sashaice [31]

Answer:

the stabilization of the negative charge in orbitals with higher s character

Explanation:

Acetylide anion is a carbon anion compound or popularly called carbanion. Now Acetylide anion is sp hybridized. However acetylide anion tends to be more acidic as we move from sp³ to sp, hence acidicity increases, which makes sp to have the highest acidity and become the most  stable.

So, we can conclude that the acetylide anion is more acidic due to the stabilization of the negative charge in orbitals with higher s character and  as the s character increases, acidic nature of acetylide anion also increases.

5 0
2 years ago
Which statement is true of diffusion?
raketka [301]

Answer:

Molecules move from areas of high concentration to areas of low concentration.

4 0
2 years ago
The molar solubility of pbi2 is 1.5 103 m.
Vsevolod [243]

Answer: -

Concentration of PbI₂ = 1.5 x 10⁻³ M

PbI₂ dissociates in water as

PbI₂ ⇄ Pb²⁺ + 2 I⁻

So PbI₂ releases two times the amount of I⁻ as it's own concentration when saturated.

Thus the molar concentration of iodide ion in a saturated PbI₂ solution = [ I⁻] =

= 1.5 x 10⁻³ x 2 M

= 3 x 10⁻³ M

PbI₂ releases the same amount of Pb²⁺ as it's own concentration when saturated.

[Pb²⁺] = 1.5 x 10⁻³ M

So solubility product for PbI₂

Ksp = [Pb²⁺] x [ I⁻]²

=1.5 x 10⁻³ x (3 x 10⁻³)²

= 4.5 x 10⁻⁹

8 0
2 years ago
Energy is released into the cell by
dsp73

Answer:

cellular respiration

Explanation:

4 0
2 years ago
Is soil a pure or impure substance?​
irinina [24]
Impure substance, because pure would be dirt from the earth
5 0
3 years ago
Read 2 more answers
Other questions:
  • how many moles of cesium carbonate will be produced when 5.34 moles of cesium reacts with iron iii carbonate
    7·1 answer
  • A polymer contains monomers linked by
    12·1 answer
  • Mark as brainlist asap plz <br><br><br><br><br><br> i need the answer asap
    14·1 answer
  • Write the steps to separate the <br>Water from salt solution​
    5·2 answers
  • What decides if an atom will be a cation or an anion?
    5·1 answer
  • The stability of atomic nuclei seem to be related to the ratio of _____.
    15·2 answers
  • Which statement best describes saturation?
    7·2 answers
  • What’s 0.517 in scientific notation?
    8·1 answer
  • If the male monster has a straight tail, what does his genotype have to be?
    9·1 answer
  • A diprotic acid (H2X) titrated with a solution of NaOH for 25 ml of the acid 87.42 ml of a 1.95 M solution of NaOH was required
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!