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
Mkey [24]
2 years ago
10

How much ice at a temperature of -17.5 ∘C must be dropped into the water so that the final temperature of the system will be 31.

0 ∘C ?
Chemistry
1 answer:
Tanya [424]2 years ago
5 0

Answer:

An insulated beaker with negligible mass contains liquid water with a mass of 0.205kg and a temperature of 79.9 °C How much ice at a temperature of −17.5 °C must be dropped into the water so that the final temperature of the system will be 31.0 °C? Take the specific heat for liquid water to be 4190J/Kg.K, the specific heat for ice to be 2100J/Kg.K, and the heat of fusion for water to be 334000J/kg.

The answer to the above question is

Therefore 0.1133 kg  ice at a temperature of -17.5 ∘C must be dropped into the water so that the final temperature of the system will be 31.0 °C

Explanation:

To solve this we proceed by finding the heat reaquired to raise the temperature of the water to 31.0 C from 79.9 C then we use tht to calculate for the mass of ice as follows

ΔH = m×c×ΔT

= 0.205×4190×(79.9 -31.0) = 42002.655 J

Therefore fore the ice, we have

Total heat = mi×L + mi×ci×ΔTi = mi×334000 + mi × 2100 × (0 -−17.5) = 42002.655 J

370750×mi = 42002.655 J

or mi = 0.1133 kg

Therefore 0.1133 kg  ice at a temperature of -17.5 ∘C must be dropped into the water so that the final temperature of the system will be 31.0 °C

You might be interested in
What is the density of a cube that has a mass of 25 g in a volume of 125 cm 3
GalinKa [24]

<span>The density of an object is defined to be its mass divided by the volume it occupies. For this problem, the mass of the cube was given to be 25 g while its volume is 125 cm</span>³. Thus, we simply divide 25 g by 125 cm³ to get the object’s density. We then calculate that the cube has a density of 0.2 g/ cm³.

3 0
3 years ago
How do I identify significant figures in chemistry?
Komok [63]
1) START counting for sig. figs. On the FIRST non-zero digit.

2) STOP counting for sig. figs. On the LAST non-zero digit.

3) Non-zero digits are ALWAYS significant.

4) Zeroes in between two non-zero digits are significant. All other zeroes are insignificant.

3 0
3 years ago
All elements in the same group A) have similar chemical properties. B) are not similar in any way. C) are in the same state at r
leva [86]

Answer:

Have similar chemical properties

Explanation:

  • The periodic table of elements is made up of groups or families and periods.
  • Elements in the same group or chemical family share similar chemical properties.
  • For example, elements in group II have similar chemical properties. They include Calcium and magnesium.
  • A similar chemical property of group II elements is that they react with water to form metal hydroxide and hydrogen gas.
4 0
3 years ago
Read 2 more answers
The chemical which is changed into the product
seropon [69]
The chemical change can occur can be find if you mix the two solids in one direction
5 0
3 years ago
Read 2 more answers
A. 3<br> B. 4<br> C. 7<br> D. 10 <br><br> WILL GIVE BRAINSLIST
IgorLugansk [536]

Answer:

C. 7

Explanation:

act what's the question?

6 0
3 years ago
Other questions:
  • What is restriction enzymes and what is it’s purpose?
    10·1 answer
  • BRAINLIEST ASAP!!! Help
    5·1 answer
  • Write the empirical formula of at least four binary ionic compounds that could be formed from the following ions: Zn2+, Ni4+, F-
    13·2 answers
  • In which type of reaction do two lighter nuclei combine to form one heavier nucleus?
    11·2 answers
  • Arrange the following substances in order of increasing boiling point CH3OH, CH4, CH3CH2OH, HOCH2CH2OH Multiple Choice O CH3OH
    10·1 answer
  • Which particle has the same mass as a neutron?
    11·2 answers
  • Please help me i will give brain list​
    10·2 answers
  • Find the mass of 0.456 mol of Ca(OH)2 <br> Please if you can show the work.
    9·2 answers
  • Which is better disney plus or hulu​
    12·1 answer
  • Ventilator should be kept in our room give reasons of science ​
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!