3 years ago

In which location would fishermen most likely catch a greater number of fish?

Chemistry

1 answer:

grigory [225]3 years ago

8 0

A am pretty sure because I go fishing and yea

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A 0.020 M solution of niacin has a pH of 3.26. (a) What percentage of the acid is ionized in this solution

mariarad [96]

Answer: 2.75%

Explanation:

$pH=-log [H+]$

$3.26 = -log [H+]$

$[H+] = 5.495\times 10^{-4} M$

$HA\rightleftharpoons H^++A^-$

initial 0.020 0 0

eqm 0.020 -x x x

$K_a=\frac{[H+][A-]}{[HA]}$

$K_a=\frac{[x][x]}{[0.020-x]}$

$x=5.495\times 10^{-4}$

$K_a=\frac{[5.495\times 10^{-4}]^2}{[0.020-5.495\times 10^{-4}]}$

$K_a =1.553\times 10^{-5}$

percent dissociation = $\frac{[H^+_eqm]}{[Acid_{initial}]}\times 100$

percent dissociation= $\frac{5.495\times 10^{-4}}{0.020}\times 100$

Thus percent dissociation= 2.75 %

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3 years ago

The law of superpositin is most relivate when what type of rock is being studied

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The rock that is being studied is

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Which substances can decrease the solubility of CaSO4? how can i identify which substances to use on the solubility table? i sup

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a jar of crunchy peanut butter contains 1.43kg of peanut butter. if you use 8.0% of the peanut butter for a sandwich, how many o

chubhunter [2.5K]

Answer: 4.04 ounce

Explanation: Given: Peanut butter contained in the jar = 1.43 kg

Used Peanut butter=8.0 % of 1.43kg = $\frac{8}{100}\times 1.43kg=0.1144kg$

As we know $1kg=35.274 ounce$

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4 years ago

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What is the bond order for a single covalent bond?

hram777 [196]

Answer:

We typically represent covalent bonds with a dash ( - ) between the atoms. This indicates a single bond. Ex: Cl - Cl

Single bond, double bond, triple bond.

Explanation:

We call it a single covalent bond because the atoms are sharing a single pair of electrons.

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3 years ago