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Korvikt [17]
2 years ago
5

Please answer this question only if you know the answer! 30 points and brainliest!

Chemistry
2 answers:
liq [111]2 years ago
5 0

A. i think it’s  the  correct answer

telo118 [61]2 years ago
5 0

A. The circuit has insufficient power supplied by the battery

Was their meant to be a diagram?

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A silver cube with an edge length of 2.42 cm and a gold cube with an edge length of 2.75 cm are both heated to 85.4 ∘C and place
kakasveta [241]

Answer:

Explanation:

Volume of silver cube = 2.42³ = 14.17 cm³

mass of silver cube = volume x density

= 14.17 x 10.49 = 148.64 gm

Volume of gold cube = 2.75³ = 20.8  cm³

mass of gold cube =  20.8 x 19.3 = 401.44 gm

specific heat of silver and gold are .24 and .129 J /g°C

mass of 112 mL water = 112 g

Heat absorbed = heat lost = mass x specific heat x temperature fall or rise

Heat lost by metals

= 148.64 x .24 x ( 85.4 -T) + 401.44 x .129 x ( 85.4 - T )

= (35.67 + 51.78 ) x ( 85.4 - T )

87.45 x ( 85.4 - T )

= 7468.23 - 87.45 T

Heat gained by water

= 112 x 1 x ( T - 20.5 )

= 112 T - 2296

Heat lost = heat gained

7468.23 - 87.45 T = 112 T - 2296

199.45 T = 9764.23

T = 48.95° C

7 0
3 years ago
A gallon of water has a mass of 3.79 kg. how many moles of water (18.02 g/mol) is this?
garik1379 [7]
First, we will convert the mass of the gallon to grams:
a gallon of water has a mass of 3.79 * 1000 = 3790 grams of water

number of moles can be calculated using the following rule:
number of moles = mass / molar mass
Therefore,
number of moles = 3790 / 18.02 = 210.32 moles
3 0
3 years ago
Read 2 more answers
Estructura molecular del óxido nitroso​
lozanna [386]

Answer:

yes

Explanation:

3 0
2 years ago
How many grams of calcium carbonate, CaCO3, contain 48 grams of oxygen atoms?
Tamiku [17]

Answer:

(40 g O) / (15.99943 g O/mol) x (1 mol CaCO3 / 3 mol O) x (100.0875 g CaCO3/mol) =  

83 g CaCO3

So answer D), although three significant digits are not justified.

Your welcome! Please give me brainiest and have a Great day! <3

7 0
2 years ago
On average an adults lung volume is 5 L convert to mL
RideAnS [48]
  • 1L=1000mL

\\ \sf\longmapsto 5L

\\ \sf\longmapsto 5(1000)

\\ \sf\longmapsto 5000mL

4 0
3 years ago
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