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
Step2247 [10]
3 years ago
12

A hot lump of 36.2 g of iron at an initial temperature of 62.0 °C is placed in 50.0 mL of H2O initially at 25.0 °C and allowed t

o reach thermal equilibrium. What is the final temperature of the iron and water given that the specific heat of iron is 0.449 J/(g·°C)? Assume no heat is lost to surroundings.
Chemistry
1 answer:
Viefleur [7K]3 years ago
7 0
Temperature of 62.0 °C is placed in 50.0 mL of H2O initially at 25.0 °C and allowed to reach thermal equilibrium
You might be interested in
Write the balanced equation for the combustion of isooctane to produce water vapor and carbon dioxide gas.Assuming gasoline is i
tangare [24]

Answer:

The yield is 16 moles of CO2 per 2 moles of isooctane.

The mass of CO2 is 1.15 billion tonnes

Explanation:

First we set the unbalanced equation:

C_{8}H_{18} + O_{2} \longrightarrow CO_{2} + H_{2}O

Now we proceed to balance the equation:

2C_{8}H_{18} + 25O_{2} \longrightarrow 16CO_{2} + 18H_{2}O

With the equation balanced, we see that the theoretical yield is 16 moles of CO2 per 2 moles of isooctane and we can proceed to make calculations with the following data:

\rho _{C_{8}H_{18}}=0.69 g/mL\\Consumption: 142.86x10^{9} gal\\1gal=3785.41 mL\\M_{C_{8}H_{18}}=114.23g/mole\\M_{CO_{2}}=44.01g/mole\\

Knowing the different relations between mass, density and molar mass, we have the following results:

V_{C_{8}H_{18}}=5.41x10^{14}mL\\m_{C_{8}H_{18}}=3.73x10^{14}g\\n_{C_{8}H_{18}}=3.27x10^{12}mole\\n_{CO_{2}}=2.62x10^{13}mole\\m_{CO_{2}}=1.15x1015g\\m_{CO_{2}}=1.15x10^{9}tonnes

8 0
4 years ago
In Fig 1-2, how should the length indicated by the arrow along the ruler be recorded?
Ksenya-84 [330]

Answer:

C. 0.35cm

Explanation:

The length indicated by the arrow along the ruler should recorded be recorded as "0.35cm".

This is correct because when counting the measurement on the ruler, the first line on the ruler is 0.1cm, the second line is 0.2cm, and so on. The spaces between each line is 0.05cm. So, the arrow is pointing on the space between 0.3cm and 0.4cm.

Therefore, 0.3cm + 0.05cm = 0.35cm.(answer).

8 0
4 years ago
What type of compound is calcium oxide
mrs_skeptik [129]
CaO ( calcium oxide) is a basic oxide.


6 0
3 years ago
Drag the tiles to the correct locations on the equation. Not all tiles will be used.
mel-nik [20]

Answer:

Tile 52 and three are incorrect

Explanation:

6 0
2 years ago
Which statement best describes a scientific theory?
mel-nik [20]

I think your answer choices are...

A. an educated guess

B. a statement of pure fact

C. a general principle based on an observable fact

D. a collection of data

Answer:

C. A general principle based on an observable fact

Explanation:

It can't be A as an educated guess is in scientific terms , a hypothesis.

It can't be B as that is a fact or a law

It can't be D as a collection of data is a data table.

5 0
4 years ago
Other questions:
  • The vapor pressure of substance X is 100. mm Hg at 1080.°C. The vapor pressure of substance X increases to 600. mm Hg at 1220.°C
    13·1 answer
  • The group number tells you how many valence electrons are located in an atom. *<br> True<br> False
    10·1 answer
  • A tropical cyclone is a weather event that causes strong winds and heavy rainfall. What is the source of energy for a tropical c
    6·1 answer
  • A solution is 40.00% by volume benzene (C6H6) in carbon tetrachloride at 20°C. The vapor pressure of pure benzene at this temper
    8·1 answer
  • Classify the solid state of the following substances as ionic crystals, covalent crystals, molecular crystals, or metallic cryst
    12·1 answer
  • Most full scuba tanks have a pressure of between 1,800 p.s.i. and 3,000 p.s.i. (pounds per square inch). Approximately 70 to 85
    6·2 answers
  • Analyze the transition of a photon
    5·1 answer
  • What is the correct name for TIAsO4?​
    10·1 answer
  • Find the density of a piece of chocolate with these measurements: 2.4 g and 5.12 mL
    12·1 answer
  • Which molecule is a product of both lactic acid fermentation and ethanol fermentation?.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!