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
irakobra [83]
3 years ago
9

Who was the first person to describe a chemical reaction as the recombination of atoms?

Chemistry
1 answer:
Cerrena [4.2K]3 years ago
4 0
Niels Bohr is the first person to describe a chemical reaction as the combination of atoms.
You might be interested in
A pH of 2 indicates a(n) _____.
solniwko [45]
A pH of 2 indicates a acid
6 0
3 years ago
What’s 0.517 in scientific notation?
Shkiper50 [21]

Answer:

5.17 × 10^-1

Explanation:

move the decimal to the right one space.

when you move the decimal to the right its exponent becomes a negative.

6 0
3 years ago
A 25.0 g piece of aluminum (which has a molar heat capacity of 24.03 J/mol°C) is heated to 86.4°C and dropped into a calorimeter
Ira Lisetskai [31]

Answer:

m H2O = 56 g

Explanation:

  • Q = mCΔT

∴ The heat ceded (-) by the Aluminum part is equal to the heat received (+) by the water:

⇒ - (mCΔT)Al = (mCΔT)H2O

∴ m Al = 25.0 g

∴ Mw Al = 26.981 g/mol

⇒ n Al = (25.0g)×(mol/26.981gAl) = 0.927 mol Al

⇒ Q Al = - (0.927 mol)(24.03 J/mol°C)(26.8 - 86.4)°C

⇒ Q Al = 1327.64 J

∴ mH2O = Q Al / ( C×ΔT) = 1327.64 J / (4.18 J/g.°C)(26.8 - 21.1)°C

⇒ mH2O = 55.722 g ≅ 56 g

5 0
3 years ago
PLS HELP ASAP WITH THIS SCIENCE HW
natta225 [31]

Answer:

Convex mirrors are more study than flat mirrors.

Explanation:

This is the correct answer because i have already studied this

6 0
3 years ago
Molecules that influence protein activity by binding to sites that are distinct from the active site are called ______________ _
Rudiy27
<span>Answer: allosteric effectors</span>
6 0
3 years ago
Other questions:
  • A gas made up of homonuclear diatomic molecules escapes through a pinhole times as fast as gas. Write the chemical formula of th
    6·1 answer
  • How do you write out 4,5-dimethyl-4-octene
    7·1 answer
  • A material that is dissolved in another material
    6·1 answer
  • What are the characteristics of a continental drift?
    5·1 answer
  • In a first-order reaction, how does the rate change if the concentration of the reactant decreases to one-third its original val
    14·2 answers
  • Determine the molecular geometry about the left carbon atom in ch3co2ch3.
    6·2 answers
  • Which of the following is most likely a solid that is not a good conductor of electricity? A. Nickel B. Sodium C. Silicon D. Flu
    6·1 answer
  • Please answer asap!
    5·1 answer
  • A compound is made of copper, nitrogen, and oxygen atoms. A sample of the compound has 6.4 grams of copper, 2.8 grams of nitroge
    5·1 answer
  • Solid material whose atoms are arranged in a repeating pattern is ______
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!