3 years ago

What is the chemical name of the compound represented by the formula Ni2O3?

Chemistry

1 answer:

faust18 [17]3 years ago

3 0

Answer:

Nickel(III) oxide is the chemical name of the compound represented by the formula Ni2O3?

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Find the theoretical probability of randomly choosing a vowel from the alphabet. 5/25 5/26 4/25 4/26

cestrela7 [59]

The answer should be 5/26 because there are 5 vowels out of 26 lethers in the alphabet.

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4 years ago

If 1495 J of heat is needed to raise the temperature of a 319 g sample of a metal from 55.0°C to 66.0°C, what is the specific he

Olegator [25]

The specific heat capacity of the metal is calculated using the following formula
Q(heat)= MC delta T
Q= 1495 j
c= specific heat capacity =?
M(mass)=319 g
delta T = change in temperature = 66-55 =11 c
by making c the subject of the formula

C=Q /M delta T
c= 1495 j/ 319 g x 11 c =0.426 j/g/c

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3 years ago

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3 years ago

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natulia [17]

Answer:

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Explanation:

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3 years ago

When the potential difference across a lamp is 3.3V the current is 0.15 calculate the resistance of the lamp and give the unit

marissa [1.9K]

Answer:

22Ω

Explanation:

Given parameters:

Potential difference = 3.3V

Current = 0.15A

Unknown:

Resistance = ?

Solution:

According to ohm's law, potential difference, current and resistance are related by the expression below;

V = I R

where V is the voltage

I is the current

R is the resistance

3.3 = 0.15 x R

R = $\frac{3.3}{0.15}$ = 22Ω

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3 years ago