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
S_A_V [24]
3 years ago
14

20g of water at 30°C was mixed with 40g of water at 75°C. What is

Chemistry
1 answer:
Kipish [7]3 years ago
4 0

Answer:

The temperature of the mixture is 60°C

Explanation:

We can write the energy of water as follows:

E = m×C×T

<em>Where E is energy in Joules, m is mass of water, C is specific heat of water = 4.184J/g°C and T is temperature</em>

<em />

Replacing fot both samples:

E = 20g×4.184J/g°C×30°C

E = 2510.4J

E = 40g×4.184J/g°C×75°C

E = 12552J

The total energy of the mixture is 12552J + 2510.4J = 15062.4J

Mass = 60g:

15062.4J = 60g×4.184J/g°C×T

60°C = T

<h3>The temperature of the mixture is 60°C</h3>

You might be interested in
The basic principle in balancing a chemical equation is to ______. hints
Natalija [7]
Answer:  obey the "law of conservation of mass".
_____________________________________
5 0
3 years ago
Read 2 more answers
The name for the following formula C9H18 should be
Elza [17]

Answer:

cyclononane C9H18 nonane

7 0
3 years ago
You need to make 10 mL of 2 mg/ml solution of protein and you have 25 mg/mL solution. How much protein solution and water do you
meriva

Answer:

0.8 mL of protein solution, 9.2 mL of water

Explanation:

The dilution equation can be used to relate the concentration C₁ and volume V₁ of the stock/undiluted solution to the concentration C₂ and volume V₂ of the diluted solution:

C₁V₁ = C₂V₂

We would like to calculate the value for V₁, the volume of the inital solution that we need to dilute to make the required solution.

V₁ = (C₂V₂) / C₁ = (2mg/mL x 10mL) / (25 mg/mL) = 0.8 mL

Thus, a volume of 0.8 mL of protein solution should be diluted with enough water to bring the total volume to 10 mL. The amount of water needed is:

(10 mL - 0.8 mL) = 9.2 mL

6 0
2 years ago
Which data can be measure quantitavtively
Marianna [84]

Quantitative data is a type of data that can be measured using numbers or is dealt with objectively. These include various types of data like temperature, weight, length, prices, area, volume, etc. now these data can be measured quantitatively.

sorry if i'm wrong

i'm new to brainly

7 0
2 years ago
Read 2 more answers
When an aqueous solution containing hydrochloric acid is just neutralized with an aqueous solution containing sodium hydroxide,
Elza [17]

Answer:

c. salty.

Explanation:

From the question,

The reaction of an acid , i.e hydrochloric acid and a base i.e. , sodium hydroxide takes place , which is a type of neutralization reaction,

Where the acid and a base reacts to give salt along with water .

From the question,

The reaction is as follows -

2 HCl  +  NaOH  →  NaCl  +  H₂O  

Hence, the resulting product is a salt ,

Therefore , the resulting solution would taste like salt.

3 0
3 years ago
Other questions:
  • Plz help. I just need someone to check answer. :(
    15·1 answer
  • In the ground state, an atom of which element has two valence electrons?
    13·2 answers
  • Technetium has a half-life of six hours. If you obtain 100g of a pure technetium sample, after 18 hours how much of the pure sub
    14·1 answer
  • The average atomic mass for any element will be closest to the average atomic mass of the ________ isotope.
    12·1 answer
  • The rate law for a reaction is rate = k[A]2. What is the overall order of this reaction, and which two varaibles, when graphed,
    12·1 answer
  • A _________________ is the path of energy transfer from producer to consumers.
    13·1 answer
  • Hello please help me on this problem thanks.sc​
    5·1 answer
  • How many of the electrons in a molecule of ethane are not involved in bondind​
    15·1 answer
  • Could someone please help me out???
    12·1 answer
  • Which of the following best describe the chronological way of specimen preparation?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!