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Fofino [41]
2 years ago
6

A compound formed with potassium and bromine that can detect blood in a stain by reacting with it to form distinctive crystals

Chemistry
1 answer:
wel2 years ago
7 0

Answer:

Potassium Bromide

Explanation:

not sure but i think thats it

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Answer:

1. B

2. M

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Explanation:

7 0
2 years ago
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Homes in rural areas where natural gas service is not available often rely on propane to fuel kitchen ranges. The propane is sto
Neporo4naja [7]

Answer:

2666.7 hours

Explanation:

The key to solve this problem is that we are given the propane gas consumed in one hour by giving us the information of the volume consumed at 1 atm, 298 K (25 +273). Using the gas law we can calculate the rate of consumption  of propane per hour, and from here we can calculate its mass and converting it to gallons and finally diving the 400 gallos by this number.

PV = nRT ∴ n = PV/RT

n = 1 atm x 165 L/ (0.08206 Latm/kmol x 298 K ) = 6.75 mol propane

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convert this to Kg:

296.88 g/ 1000 g/Kg = 0.30 Kg

calculate the volume in liters this represents by dividing by the density:

0.30 Kg / 0.5077 Kg/L =  0.59 L

changing this to gallons

0.59 L x  1 gallon/3.785 L = 0.15 gallon

and finally calculate how many hours the 400 gallons propane tank will deliver

400 gallon/ 0.15 gallon/hr = 2666.7 hr

6 0
3 years ago
Describe the contributions made by the following scientists to the development of the periodic table.
Basile [38]

Answer:

B

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dimitri Mendeleev......

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I hope this helps !



—-
-GOOD LUCKKKk!!!

8 0
3 years ago
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