3 years ago

By definition, any substance that donates a proton is best defined as _________.

Chemistry

1 answer:

BabaBlast [244]3 years ago

8 0

A proton is the same as an H+ ion, and Arrhenius acids are the ones that release H+ in solution, so the answer is A

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Use bond energies from Table 10.3 in the textbook to estimate the enthalpy change (ΔH) for the following reaction. C2H2(g)+H2(g)

Digiron [165]

Answer: $=176.6kJmol^{-1}$

Explanation:Bond energy of H-H is 436.4 kJ/mole

Bond energy of C-H is 414 kJ/mol

Bond energy of C=C is 620 kJ/mol

Bond energy of C≡C is 835 kJ/mol

$\Delta H= {\text {sum of bond energies of reactants}}- {\text {sum of bond energies of products}}$

$\Delta H$ = {1B.E(C≡C)+2B.E(C-H) +1B.E(H-H)} - {1B.E(C=C)+4B.E(C-H)}

$\Delta H= {1B.E(835kJmole^{-1})+2B.E(414kJmole^{-1}) +1B.E(436.4kJmole^{-1})} - {1B.E(620kJmole^{-1})+4B.E(414kjmole^{-1})}$

$=176.6kJmol^{-1}$

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3 years ago

What is the correct name of the compound Pb(NO3)2?

Margaret [11]

Answer:

it's lead (ii) nitrate the name

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2 years ago

What variable represents specific heat in the equation Q = mcAT?

Elan Coil [88]

Answer: A. The variable c

============================================

Explanation:

Q = heat transferred

m = mass

c = specific heat

$\Delta T$ = delta T = change in temperature

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3 years ago

A student prepares two solutions as shown. The dots represent solute particles. The student wants to test the conductivity of ea

stealth61 [152]

Answer:

I think its D

Explanation:

It cant be B or C bc the solute particles arent changing. And its not A because the concentration isnt constant

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2 years ago

PLZ HELP!

Setler [38]

Answer:

The answer is RNA

Explanation:

Each sequence of three nucleotides, called a codon, usually codes for one particular amino acid. (Amino acids are the building blocks of proteins.) A type of RNA called transfer RNA (tRNA) assembles the protein, one amino acid at a time.

7 0

2 years ago

Read 2 more answers