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3 years ago

A toaster has a resistance of 28 Ω and is plugged into a 110 V circuit. Using the GRASS method, what current is measured?

Chemistry

1 answer:

BARSIC [14]3 years ago

4 0

Answer:

The current of the toaster is 3.93A

Explanation:

Using the GRASS method:

G: Given: The information that is given is that we have 28Ω of Resistance and 110V of voltage.

R: Required: We need to find the current measured.

A: Action: We can use Ohm's law that relates resistance, voltage and current in the equation:

V = R*I

Or:

I = V/R

<em>Where I is current in A, V is voltage = 110V and R is resistance = 28Ω</em>

S: Solve:

I = 110V / 28Ω

I = 3.93A

S: Statement:

<h3>The current of the toaster is 3.93A</h3>

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3 years ago

From the mass of Al reacted, how many moles are present? What is the mole ratio between Al and H2 in the balanced chemical react

tigry1 [53]

Answer:

From the mass of Al reacted, how many moles are present? We don't have the mass of Al reacted

What is the mole ratio between Al and H2 in the balanced chemical reaction?

By stoichiometry, ratio between Al and H₂ is 3:2

What units are required on the temperature when doing calculations with gases? °K degrees

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Explanation:

A chemical reaction for this can be this one:

2Al (s) + 6HCl (aq) → 2AlCl₃(aq) + 3H₂ (g)

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To get the moles which are present in the mass of Al reacted you must calculate:

Al Mass / Al molar mass = Al moles

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5 0

3 years ago

The reaction of 15 moles carbon with 30 moles O2 will

chubhunter [2.5K]

Answer:

15 moles.

Explanation:

Hello,

In this case, the undergoing chemical reaction is:

$C+O_2\rightarrow CO_2$

Clearly, since carbon and oxygen are in a 1:1 molar ratio, 15 moles of carbon will completely react with 15 moles of oxygen, therefore 15 moles of oxygen remain as leftovers. In such a way, since carbon and carbon dioxide are also in a 1:1 molar ratio, the theoretical yield of carbon dioxide is 15 moles based on the stoichiometry:

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Best regards.

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3 years ago

Calculate the formula mass for the compound tin(IV) sulfate.

stellarik [79]

The molecular formula for tin(IV) sulfate is Sn(SO₄)₂.
mass of sulfur S = 32.065
as there is 2 sulfur in tin (IV) sulfate = 32.065 x 2 = 64.13
mass of oxygen = 15.999 and there are 8 oxygen atoms in the formula;
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mass of tin = 118.71
now add all the masses = 64.13 + 127.992 + 118.71 = 310.832
formula mass of tin(IV) sulfate is 310.832

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3 years ago