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
V125BC [204]
3 years ago
7

Which substance would cool down faster concrete or iron

Chemistry
1 answer:
Olin [163]3 years ago
7 0
Personal experience from Ag Mech classes-Concrete cools faster than metal.
You might be interested in
Material
ziro4ka [17]
What are you trying to ask
5 0
3 years ago
A burning candle demonstrates the following type of energy transformations.
Ronch [10]

Answer:

B

Explanation:

the candle is hot so the first energy form should be heat. u could now just eliminate the rest but for further notice. the heat melts the wax in the candle, which is a physical change but also the thread is burning out which is a chemical change then light follows

5 0
2 years ago
QUICK (lots of points) How many lone pairs are present in Xylene?!
Snezhnost [94]

i dont think their are a exact number

7 0
3 years ago
Read 2 more answers
Why was alchemy so confusing?​
galina1969 [7]
Search Results
Featured snippet from the web
Alchemy is extremely complicated. It is based on the practical skills of early metal workers and craftsmen, on Greek philosophy, and on Eastern mystic cults that sprang up in the first centuries after Christ and influenced so much of magic and occult thought.
8 0
3 years ago
2Al + 6HCl → 2AlCl3 + 3H2
Nadya [2.5K]

Answer: The reaction produces 2.93 g H₂.

M_r:                        133.34  2.016

       2Al + 6HCl → 2AlCl₃ + 3H₂

Moles of AlCl₃ = 129 g AlCl₃ × (1 mol AlCl₃/133.34 g AlCl₃) = 0.9675 mol AlCl₃

Moles of H₂ = 0.9675 mol AlCl₃ × (3 mol H₂/2 mol AlCl₃) = 1.451 mol H₂

Mass of H₂ = 1.451 mol H₂ × (2.016 g H₂/1 mol H₂) = 2.93 g H₂

Explanation:

6 0
2 years ago
Other questions:
  • Butylated hydroxytoluene (BHT) is used as an antioxidant in processed foods. (It prevents fats and oils from becoming rancid.) A
    14·1 answer
  • Which ocean borders Africa on the western coast?
    12·2 answers
  • Elaborate on the suitability of "cola" type drinks to polish chrome surfaces. A) The basic pH of cola allows for easy removing o
    5·1 answer
  • 4CO2(g) + 2H2O(g) 2C2H2(g) + 5O2(g) Given: 118 kJ 235 kJ 470 kJ 940 kJ 1058 kJ
    13·2 answers
  • A 4.5x10 to the negative 3 M solution of a weak acid is 6.3% dissociated at 25%C. In a 4.5x10 to the negative 4 M solution, the
    13·1 answer
  • Why do people make mixtures
    13·1 answer
  • Is anime a good thing or a bad thing?
    13·1 answer
  • The irreversible elementary gas-phase reaction is carried out isothermally at 305 K in a packed-bed reactor with 100 kg of catal
    9·1 answer
  • Which statement about stars is correct?
    8·1 answer
  • 4Fe + 302 → 2Fe2O3
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!