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
Natasha2012 [34]
3 years ago
12

How many calories of heat are required to raise the temperature of 10 grams of iron from 100°C to 200°C? (Question number7)

Chemistry
1 answer:
borishaifa [10]3 years ago
6 0
110 calories are required to raise the temperature.

-

Specific heat = calories / mass * (final temperature - initial temperature)

Insert known factors of the equation before rearranging to isolate the unknown (in this case, calories)

0.11 = calories / 10 * (200 - 100)
0.11 = calories / 10 * 100
0.11 * (10 * 100) = calories
0.11 * 1000 = calories
110 = calories
You might be interested in
Which of these substances are most likely crystalline solids? Select all that apply.
Lostsunrise [7]

Answer:

you did not show the options

Explanation:

8 0
3 years ago
Read 2 more answers
Enter your answer in the provided box. Before arc welding was developed, a displacement reaction involving aluminum and iron(III
Likurg_2 [28]

Answer:

grams of iron = 2262.4  g

Explanation:

The balanced chemical equation should be represented first.  

2Al + Fe2O3 → Al2O3 + 2Fe

find the limiting reactants by converting to moles.

covert 1.64 kg to grams = 1640 g

moles = mass/molar mass = 1640/27 = 60.7407407407  moles

60.7407407407 × 1 mol-rxn /2 = 30.37  mol-rxn

The limiting reactant is Fe2O3 Therefore it will determine the yield of Iron

2Al + Fe2O3 → Al2O3 + 2Fe

molar mass of Fe2O3 = 56 × 2 + 16 × 3 =  112 + 48 = 160 g

atomic mass of iron = 56

mass of iron in the reaction = 56 × 2 = 112 g

moles = mass/molar mass

mass = moles × molar mass

mass = 20.2 × 160 = 3232  g

if 160 g of Fe2O3  give 112 g of iron

3232 g of Fe2O3 will give ? grams of iron

grams of iron = 3232 × 112/ 160

grams of iron = 361984 /160

grams of iron = 2262.4  g

7 0
3 years ago
Which of the following is not true about chemical changes? a. They form a new substance. b. They can be reversed by physical cha
Sonbull [250]

Answer: The correct option is b.

Explanation: Chemical reaction is a reaction i which the chemical composition of the reactants gets changed and new substances having different chemical composition is formed. This reaction cannot be reversed by any physical means.

Indicators showing chemical changes are :

  • Color change
  • Characteristic odor
  • Formation of bubbles
  • Formation of precipitate

From the given information above, it can be stated that the correct option is b.

8 0
3 years ago
Read 2 more answers
What is the formula for tetrasulfur dinitride
igomit [66]

Answer:

S4N2

Explanation:

good luck have a nice day

5 0
3 years ago
PLEASE ANSWER LIKE RN 
tensa zangetsu [6.8K]

it is b because i know this stuff

4 0
3 years ago
Other questions:
  • Some atoms are exceptions to the octet rule by having an expanded octet. Which characteristic is needed for an atom to have an e
    9·2 answers
  • Which metal is more active Ni and less active than Zn
    14·1 answer
  • A 20.0 mL sample of glycerol has a mass of 25.2 grams. What is the mass of a 57 mL sample of glycerol?
    13·2 answers
  • Why is the ocean water near the poles less salty than other places?
    11·2 answers
  • Which of the following would form a heterogeneous mixture?
    9·1 answer
  • What is the mass number of the isotope of calcium (ca) containing 20 neutrons?
    12·1 answer
  • Which of these elements is a metal? A. hafnium (Hf) B. radon (Rn) C. silicon (Si) D. sulfur (S) E. selenium (Se)
    11·2 answers
  • How do you prepare copper sulphate​
    13·1 answer
  • Building Vocabulary
    9·1 answer
  • Which group on the periodic table has the most reactive metals?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!