2 years ago

What is a disadvantage of a series circuit?

Chemistry

1 answer:

Digiron [165]2 years ago

3 0

The answer is B

If one circuit fails, it is most likely that all the components in the circuit will fail.

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What is the name of the compound that has the formula Li2SO3?

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The answer is A lithium sulfite

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4 years ago

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Answer question 13. What is the mechanical advantage of a lever that can lift a 100 N load with a input force of 20 N

vazorg [7]

MA= output force/ input force
MA= 100N/20N
MA= 50

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3 years ago

Sand dunes are created when the wind carrying the sand runs into an obstacle A. True B. False

Troyanec [42]

A. True

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3 years ago

Farmers who raise cotton once used arsenic acid, H₃AsO₄, as a defoliant at harvest time. Arsenic acid is a polyprotic acid with

Stels [109]

Explanation:

The reaction equation will be as follows.

$H_{3}AsO_{4} \rightleftharpoons H_{2}AsO^{-}_{4} + H^{+}$

Hence, the expression for $K_{a}$ is as follows.

$K_{a} = \frac{[H_{2}SO^{-}_{4}][H^{+}]}{[H_{3}AsO_{4}]}$

Let us assume that the concentration of both $[H_{2}AsO^{-}_{4}]$ and $[H^{+}]$ is x.

$2.5 \times 10^{-4} = \frac{x \times x}{0.5}$

x = 0.01118034

This means that the concentration of $[H^{+}]$ is 0.01118034.

Since, we know that the relation between pH and concentration of hydrogen ions is as follows.

pH = $-log [H^{+}]$

= $-log (0.01118034)$

= 1.958

Thus, we can conclude that the pH of a 0.500 M solution of arsenic acid is 1.958.

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3 years ago

The Connecticut Bueller theory assumes that particles of an ideal gas are

postnew [5]

are in random, constant, straight-line motion

your welcome :)

all I Ask is for a thank u peaceeee

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3 years ago