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
zhuklara [117]
3 years ago
6

The specific heat capacity of liquid water is 4.18 J/g oC. Calculate the quantity of energy required to heat 1.50 g of water fro

m 26.5oC to 83.7oC. (Ignore significant figures for this problem.)
Chemistry
1 answer:
natima [27]3 years ago
5 0

Answer: The quantity of heat required is 358.644 J.

Explanation:

Given: Specific heat capacity = 4.18 J/g^{o}C

Mass = 1.50 g

T_{1} = 26.5^{o}C

T_{2} = 83.7^{o}C

Formula used to calculate heat energy is as follows.

q = m \times C \times (T_{2} - T_{1})

where,

q = heat energy

m = mass

C = specific heat capacity

T_{1} = initial temperature

T_{2} = final temperature

Substitute the values into above formula as follows.

q = m \times C \times (T_{2} - T_{1})\\= 1.50 \times 4.18 J/g^{o}C \times (83.7 - 26.5)^{o}C\\= 358.644 J

Thus, we can conclude that quantity of heat required is 358.644 J.

You might be interested in
Show Optical Isomerism of Tartaric acid?
Soloha48 [4]

Answer:

sana nakatulong sainyo

8 0
3 years ago
What is the volume of a gas if 0.182 moles of the gas is at 1.99 atm and 83.4oC?
Lerok [7]

Answer:

2.68 Liters

Explanation:

ideal gas law

PV=NRT

to get the volume

rearrange the formula

V=nRT/P

R molar gas constant is in units joules per mole kelvin :

8.314 J/(mol K) (joules per mole kelvin)

T temperature part of this is in kelvin so you have to convert the Celsius temperature to kelvin

1 Celsius is 274.15 kelvin so

83.4 Celsius is 356.55 kelvin

P pressure is in Pascal or Pa units

so you have to convert atm into Pa

1 atm is 201636.8 Pa or Pascals so

1.99 atm is 201636.8 Pa

V volume will be in cubic meters or m^3

m^3 will need to changed to liters

1 cubic meter or m^3 is 1000 liters

n amount of substance is in moles

again the rearranged formula is

V=nRT/P

(0.182*8.314*356.55)/201636.8 =

0.00267566693 cubic meters or m^3

1 cubic meter or m^3 is 1000 liters so

0.00267566693 cubic meters or m^3 times 1000 =

2.67566693 liters

4 0
2 years ago
Radium has a half-life of 1,620 years. In how many years will a 1 kg sample of radium decay and reduce to 0.125 kg of radium?
Tasya [4]
We can calculate years by using the half-life equation. It is expressed as:

A = Ao e^-kt

<span>where A is the amount left at t years, Ao is the initial concentration, and k is a constant.

</span>From the half-life data, we can calculate for k.

1/2(Ao) = Ao e^-k(1620)
<span>k = 4.28 x 10^-4
</span>
0.125 = 1 e^-<span>4.28 x 10^-4 (</span>t)
t = 4259 years
7 0
3 years ago
Read 2 more answers
Is na2o a element or compound
Orlov [11]

Answer:

Its a compound :PP

Explanation:

have a good day

5 0
3 years ago
Read 2 more answers
13.8g element consist 4.6 ×10^22 atoms what is atomic mass of element?​
Keith_Richards [23]
<h2>~<u>Solution</u> :-</h2>
  • Here, to find the atomic mass of element, we must;

We know that,

  • 4.6 x $ \sf{10^{22}}$ atoms of an element weigh 13.8g.

Thus,

The atoms of $ \sf{ 6.02 \times 10^{13}}$ will weigh;

=   \sf{\frac{13.8  \times 6.02 \times  {10}^{23} }{4.6 \times {10}^{22} } } \\

=  \sf{180.6 \: g \:  \: (molar \: mass)}

  • Hence, the molar mass (atomic mass) will be <u>180.6 g.</u>
8 0
2 years ago
Read 2 more answers
Other questions:
  • The fatty acids in the tail of a phospholipid molecule are _____. nonpolar and hydrophobic
    12·1 answer
  • Name two elements in which the last electrons to be added are placed into s subshells
    5·1 answer
  • One year ago, you sold a put option on 100,000 euros with an expiration date of 1 year. you received a premium on the put option
    13·1 answer
  • How many grams of kno3 pellets must be dissolved in water in order to prepare 100 ml of a 8 m kno3?
    9·1 answer
  • describe how you could use research and the scientific method to test a claim that organic foods are better than natural foods.
    10·2 answers
  • What is the resistance of a hairdryer if it is 120 volts with a current of 15 amperes?
    9·2 answers
  • 1. MgCO,→ MgO +Co, is an example of a
    11·1 answer
  • Which of these elements could be formed at the anode when a molten salt is electrolysed?
    9·2 answers
  • MATH AND SCIENCE
    12·1 answer
  • If charcoal and sugar were present in crude benzoic acid, would recrystallization from water be a good method of purification? W
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!