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butalik [34]
3 years ago
8

5.2*10^26 molecules of ch4 in volume

Chemistry
1 answer:
aivan3 [116]3 years ago
4 0
5.2e+26is it this? im not sure 
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A compound die will be used to blank and punch a large washer out of aluminum alloy sheet stock 3.2 mm thick. the outside diamet
rodikova [14]

a) The sizes of punch and blanking are equivalent to its diameters. The blanking die diameter is Db = 65 mm

Diameter of the blanking punch is,

dpunch = Db - 2c

Here, c = Ac (thickness)

For aluminium, Ac = 0.06

c = (0.06) (3.2 mm) = 0.192 mm

dpunch = (65 mm) - 2 (0.192 mm)

= 64.616 mm

b) The diameter of the punching punch is equivalent to the interior diameter of the washer.

Thus, diameter of the punching die is, Dh = 30 mm

Diameter of the punching die is,

ddie = Dh + 2c

= (30 mm) + 2 (0.192)

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7 0
3 years ago
How many kilograms of oil are needed to heat 190 kg of water from 22 ∘C to 100∘C? (Assume that 1lb=454g, the specific heat of li
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Answer:

m = 1.3 Kg

Explanation:

according  to Specific Heat Formula :

Q = mc∆T

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m is the mass of water

C is the specific heat its unit J/kg∙K

∆T change in temperature (the final t - the initial t)

by substitution:

Q = 190000 g * 4.184 J/g∘C *78

Q = 62006880 J

when The combustion of 1.0 lb of oil provides 2.2×107J

So lb of oil when Q = 62006880 J = 2.8 Ib

and when 1lb=454g

So 2.8 Ib = 1271.2 g = 1.3 Kg

8 0
3 years ago
one chemical property that can be measured in a substance is its reactivity with water what is another chemical property
Wittaler [7]
Heat of combustion is a chemical property that can be measured.
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If 29.4 mL of ethanol is dissolved in water to make 359 mL of solution, what is the concentration expressed in volume/volume % o
Sveta_85 [38]

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Explanation:- Volume percentage is the ratio of volume of solute to the volume of solution defined in terms of percentage.

{\text {volume percentage}}=\frac{\text {volume of solute}}{\text {volume of solution}}\times 100\%

Given: volume of solute = 29.4 ml

Volume of solution= 359 ml

{\text {volume percentage}=\frac{29.4}{359}\times 100\%=8.2\%


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4 years ago
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