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3 years ago

10

The specific heat of aluminum is 0.900 J/gº C. A 400.0 g sample of aluminum at 20.0º C absorbs 2520. J of heat energy. What is t

he new temperature of the aluminum?

1 answer:

Ipatiy [6.2K]3 years ago

8 0

I'm pretty sure it's 8 xd

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Which of the following is not equal to 485 L?

ELEN [110]

Answer:

$4.85 * 10^4\ mL$

Explanation:

Given

485 L

Required

Determine the measurement not equal to 485L

$0.485\ kL$

<em>From standard unit of conversion;</em>

1 KL = 1000 L

<em>Multiply both sides by 485</em>

$485 * 1 KL = 485 * 1000 L$

$485KL = 485000L$

<em>Divide both sides by 1000</em>

$\frac{485KL}{1000} = \frac{485000L}{1000}$

$0.485KL = 485L$ ---- This is equivalent

---------------------------------------------------------------------------------------------

$4.85 * 10^4\ mL$

<em>From standard unit of conversion;</em>

1000 mL = 1 L

<em>Multiply both sides by 485</em>

$485 * 1000 mL = 1 L * 485$

$485000\ mL = 485\ L$

Convert to standard form

$4.85 * 10^5\ mL = 485\ L$

Hence; $4.85 * 10^4\ mL$ is not equivalent to 485L

---------------------------------------------------------------------------------------------

$48500 \ cL$

<em>From standard unit of conversion;</em>

100 cL = 1 L

<em>Multiply both sides by 485</em>

$485 * 100 cL = 1 L * 485$

$48500\ cL = 485\ L$

Convert to standard form

$4.85 * 10^4\ cL = 485\ L$ ---- This is equivalent

---------------------------------------------------------------------------------------------

$4.85 * 10^8 \$ μL

<em>From standard unit of conversion;</em>

1000000 μL = 1 L

<em>Multiply both sides by 485</em>

$485 * 1000000uL = 1 L * 485$

$485000000uL = 485\ L$

Convert to standard form

$4.85 * 10^8\ uL = 485\ L$ ---- This is equivalent

From the list of given options;

$4.85 * 10^4\ mL$ is not equivalent to 485L

4 0

3 years ago

9 How many grams of O₂ are needed to produce 15.5 g Fe₂O3 in the following reaction? Fe(s) + O₂(g) → Fe₂O3 (s)

Slav-nsk [51]

Answer:

Explanation:

so u can work out the amount of moles in FeO3 by doing mr of fe3o3 is 55.8*3+16*3=215.4

moles= mass/mr so you do 15.5g/215.4=0.0719 moles

then using 1 to 1 ratio so O2 moles is 0.0719

then use the equation mass=mole*mr

so 0.0719*16=1.15g

hope this make sense :)

8 0

2 years ago

That my last Q8 A , can someone help me with

DENIUS [597]

The first whistle is louder while the second whistle has a higher pitch
Loud vs high

3 0

2 years ago

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Fantom [35]

Answer:

D. potential

Explanation:

D. potential

5 0

2 years ago

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One of the differences between a voltaic cell and an electrolytic cell is that in an electrolytic cell __________.

aliya0001 [1]

Answer:

<u>a nonspontanenous reaction is forced to occur</u>

<em>Hope</em><em> this</em><em> helps</em><em> </em><em>:</em><em>)</em>

6 0

2 years ago