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3 years ago

What is the electrical power generated from a voltage of 12.3 V if the current is 9.42 amps

Chemistry

1 answer:

miv72 [106K]3 years ago

3 0

Answer:

the electrical power would be 115.86 watts. have a nice day

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How many cobalt atoms are in 345 g of cobalt

lilavasa [31]

Answer:

$\boxed {\boxed {\sf About \ 3.53 \ *10^{24}atoms \ Co}}$

Explanation:

To convert from grams to atoms:

Convert grams to moles
Convert moles to grams

1. Convert grams to moles

First, find the molar mass of cobalt using the Periodic Table of Elements.

Cobalt (Co): 58.93319 g/mol

Next, use this mass as a ratio or fraction.

$\frac{58.93319 \ g\ Co}{1 \ mol \ Co}$

Multiply the mass of the given sample (345 grams) by this ratio.

$345 \ g \ Co *\frac{58.93319 \ g\ Co}{1 \ mol \ Co}$

Flip the fraction so the grams of Cobalt will cancel each other out when multiplying.

$345 \ g \ Co *\frac{1 \ mol \ Co}{58.93319 \ g\ Co}$

$345 \ *\frac{1 \ mol \ Co}{58.93319 }$

$\frac{345 \ mol \ Co}{58.93319 } =5.854086636 \ mol \ Co$

2. Convert moles to atoms

Use Avogadro's Number, which tells us the number of units (in this case atoms) in 1 mole.

$6.022 *10^{23} \ atoms/mol$

Use this number as a ratio or fraction.

$\frac{6.022 * 10^{23} \ atoms \ Co}{1 \ mol \ Co}}$

Multiply this ratio by the number of moles we found.

$5.854086636 \ mol \ Co*\frac{6.022 * 10^{23 }\ atoms \ Co}{1 \ mol \ Co}}$

The moles of Cobalt will cancel.

$5.854086636 \ *\frac{6.022 * 10^{23 }\ atoms \ Co}{1 }}$

$5.854086636 \ *{6.022 * 10^{23 }\ atoms \ Co}$

$3.52533097*10^{24} \ atoms \ Co$

3.Round

The original measurement of 345 has 3 significant figures (3, 4, and 5). We must round to 3 sig figs, which is the hundredth place for this measurement.

$3.52533097*10^{24} \ atoms \ Co$

The 5 in the thousandth place tells us to round the 2 to a 3.

$3.53 \ *10^{24}atoms \ Co$

There are about 3.53*10²⁴ atoms of cobalt in 345 grams.

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What are the three conditions that can cause a chemicl reactions, give examples? Help me plz

finlep [7]

Acid. that’s all i know.

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3 years ago

Material property of glass

iren2701 [21]

The main characteristics of glass are transparency, heat resistance, pressure, and breakage resistance, and chemical resistance.

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3 years ago

GalinKa [24]

The bowl of mixed fruits is a mixture because there are several things making up the object. Hence, option (B) is correct.

What is a mixture?

The matter is categorized as mixtures and pure substances.
A mixture is defined as a combination of substances that are not chemically mixed.
A mixture can exist in solid, liquid, or gas form.
A mixture can exist in the same or in a different phase. It can be homogenous or heterogeneous.
If the substances are combined in the same phase, then the mixture is a homogeneous mixture.
But if the substances are combined in different phases, then it is a heterogeneous mixture.

Therefore, the mixed fruit bowl is a mixture, because there are several things making up the object.

Hence, option (B) is correct.

To learn more about mixture, visit: brainly.com/question/12160179

#SPJ9

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Which is a good example of a contact force?

Alex Ar [27]

D bc they actually contacted each other

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