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OleMash [197]
3 years ago
15

Suppose you need to build a raft to cross a fast moving river. Describe the physical and chemical properties of the raft that wo

uld be important.
Chemistry
1 answer:
hichkok12 [17]3 years ago
7 0
For starters, your raft would have to be waterproof. It would have to be sturdy enough not to flip and big enough to hold you and anything else you might have with you. A chemical property might be that the tar you cover your raft with will prevent the water from getting in your raft. Hope I helped!
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A 125 mL bubble of hot gases at 213 ∘C and 1.77 atm is emitted from an active volcano. Part A What is the final temperature, in
Svetach [21]

Answer:

T₂  = 242 K

Explanation:

According to general gas equation:

P₁V₁/T₁ = P₂V₂/T₂

Given data:

Initial volume = 125 mL

Initial pressure = 1.77 atm

Initial temperature = 213 °C (213 +273 = 486 K)

Final volume = 136 mL

Final pressure = 0.810 atm

Final temperature = ?

Solution:

P₁V₁/T₁ = P₂V₂/T₂

T₂ = P₂V₂T₁ / P₁V₁

T₂ = 0.810 atm × 136 mL × 486 K / 1.77 atm× 125 mL

T₂  =  53537.76 atm .mL.  K  / 221.25 atm . mL

T₂  = 242 K

6 0
3 years ago
List the 3 particles that make up an atom.
laila [671]

The 3 particles are protons, neutrons, and electrons?

4 0
3 years ago
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What amount of heat energy is required to raise the temperature of 152 g of water from 24 °C to 74 °C.
DIA [1.3K]

Answer:

Q = 31798.4J = 31.79kJ

Explanation:

Heat energy (Q) = ?

Mass (m) = 152g

T1 = 24°C

T2 = 74°C

Specific heat capacity of water (c) = 4.184J/g°C

Q = Mc∇T

Q = 152 * 4.184 * (74 - 24)

Q = 635.968 * 50

Q = 31798.4J

Q = 31.79kJ

Heat required is 31.79kJ

6 0
3 years ago
I need to know what the answer to number 4 letter a.
QveST [7]
I believe it is C. I hope
4 0
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Caffeine belongs to a large class of nitrogen-containing natural products called ____________.
Sati [7]

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I Dont know sorry.........

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3 years ago
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