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
dexar [7]
2 years ago
9

Pls anwser (you don’t have to anwser all of them) heeelllpppp

Chemistry
2 answers:
olganol [36]2 years ago
5 0

Answer:

animals cant become a newer animal not possible

Explanation:

alex41 [277]2 years ago
4 0
Hi! For the first question: this isn’t true. It can’t be done. Animals can’t evolve from other animals.
You might be interested in
_____ energy is energy available to do work.
Arisa [49]
The answer is C. Free Energy.

Activation energy is the energy that must be exceeded before a chemical reaction can occur.  Free energy best describes as energy available to do work.
7 0
3 years ago
Read 2 more answers
When the burner in a hot air balloon is turned on, the temperature of the air in the balloon ________ causing its volume to ____
raketka [301]

B) increases, expand, rises

4 0
3 years ago
The movement of one or more from one reactant to another is called
mrs_skeptik [129]

Answer: Redox Reaction

Explanation:

Redox reaction is the key chemical events in an oxidation-reduction also called Redox. It is the net movement of electrons from one reactants to another

7 0
3 years ago
How many moles of Li would react with 4 moles of MgBr₂ in the reaction
ad-work [718]

Answer:

two may be the answer (2)

3 0
2 years ago
In solid NaCl, the equilibrium separation between neighboring Na+ and Cl- ions is 0.283 nm. Calculate the coulombic energy betwe
const2013 [10]

Explanation:

It is given that r = 0.283 nm. As 1 nm = 10^{-9} m.

Hence, 0.283 nm = 0.283 \times 10^{-9} m

  • Formula for coulombic energy is as follows.

             U_{coulomb} = -1.748 \frac{e^{2}}{4 \pi \epsilon_{o} r}

where,   e = 1.6 \times 10^{-19} C

            \epsilon_{o} = 8.85 \times 10^{-12}

          U_{coulomb} = -1.748 \frac{(1.6 \times 10^{-19}^{2}}{4 \times 3.14 \times 8.85 \times 10^{-12} \times 0.283 \times 10^{-9}}

                         = 1.423 \times 10^{-18} J

  • As 1 eV = 1.6 \times 10^{-19} J

So,       1 J = \frac{1 eV}{1.6 \times 10^{-19}}

Hence,    U = \frac{1.423 \times 10^{-18} J}{1.6 \times 10^{-19} J}

                   = 8.9 eV

  • Also,   1 J = \frac{10^{-3} kJ}{6.022 \times 10^{23}mol}

                = 1.67 \times 10^{-27} kJ/mol

Therefore, U = 1.423 \times 10^{-18} J \times 1.67 \times 10^{-27} kJ/mol

                     = 2.37 \times 10^{-45} kJ/mol

7 0
3 years ago
Other questions:
  • Question 4b, c please.
    10·1 answer
  • Infer: Is the reaction below possible? Explain why or why not. H2O + NaOH NaCl + H2
    7·1 answer
  • How many moles are in 98.17 g of osmium?​
    7·1 answer
  • What mass of O2 was used up in the reaction with an excess of SO2 gas if 14.2 g of sulfur trioxide is formed?
    8·1 answer
  • A family is another name for a group on the<br> table of elements.
    13·2 answers
  • What charge does Co have in Cobalt (III) Chloride?
    15·2 answers
  • The formula of the most common in of sulphur
    8·2 answers
  • Of the following transitions in the Bohr hydrogen atom, which of the following
    10·1 answer
  • What determines the strength of a dipole-dipole force?
    6·2 answers
  • Which of the following is true about covalent bonding?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!