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Harman [31]
3 years ago
15

It is the one in the middle i listened to the first person and i got it wrong by the way this is the answer for edge2020 sience

review
Chemistry
1 answer:
Anna11 [10]3 years ago
6 0

Answer:

for what school? It's different for all sadly :(

Explanation:

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It will benefit the flower because it will always get Polonated but it can be bad for the bees because if the flower dies so will the bees
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The row or period on the periodic table tells us
ololo11 [35]

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its a

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4 0
2 years ago
A sample of metal has a mass of 21.35 g, and a volume of 6.28 mL. What is the density of this metal?
Scilla [17]

Answer:

3.40g/mL

Explanation:

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5 0
3 years ago
1. What is the specific heat (C) of an unknown sample that weighs 5.0 grams, absorbds 250.0j of heat and has a temperature
maks197457 [2]
Note: The question is incomplete. The complete question is given below :
Suppose a substance has a heat of fusion equal to 45 cal/g and a specific heat of 0.75 cal/g°C in the liquid state. If 5.0 kcal of heat are applied to a 50 g sample of the substance at a temperature of 24°C, what will its new temperate be? What state will the sample be in? (melting point of the substance = 27°C; specific heat of the solid =0.48 cal/g°C; boiling point of the substance = 700°C)
Explanation:
1.a) Heat energy required to raise the temperature of the substance to its melting point, H = mcΔT
Mass of solid sample = 50 g; specific heat of solid = 0.75 cal/g; ΔT = 27 - 24 = 3 °C
H = 50 × 0.75 × 3 = 112.5 calories
b) Heat energy required to convert the solid to liquid at its melting point at 27°C, H = m×l, where l = 45 cal/g
H = 50 × 45 = 2250 cal
c) Total energy used so far = 112.5 cal + 2250 cal = 2362.5 calories.
Amount of energy left = 5000 - 2362.5 = 2637.5 cal
The remaining energy is used to heat the liquid
H = mcΔT
Where specific heat of the liquid, c = 0.75 cal/g/°C, H = 2637.5 cal, ΔT = temperature change
2637.5 = 50 × 0.75 x ΔT
ΔT = 2637.5 / ( 50*0.75)
ΔT = 70.3 °C
Final temperature of sample = (70.3 + 27) °C = 97.3 °C
The substance will be in liquid state at a temperature of 97.3 °C

i hope that this eg gonna help u
7 0
2 years ago
What volume of product is produced when 20.0 Mg of liquid hydrogen reacts with excess liquid oxygen in a rocket propellant react
Zinaida [17]
Good luck g hope you get it right
4 0
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