When the ocean washes farther up shore
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Related Questions
Is an elements reactivity determined by the number of protons found in an atom of the element
Write your answer in scientific notation and Stanford form.
What is pH level, what are its characteristics, and how does it contribute to pollution?
I need help! Complete the equation iron+hydrochloric acid ----- ____________+____________
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Mass of water: 43 g
Explanation:
When a substance is heated, the temperature of the susbtance increases according to the equation:
where
Q is the amount of heat supplied to the substance
m is the mass of the substance
C is the specific heat capacity of the substance
is the increase in temperature
In this problem, we have:
Q = 4300 J is the heat absorbed by the water
C = 4200 J/gC is the specific heat capacity of water
is the increase in temperature
By re-arranging the equation, we can find the mass:
Learn more about specific heat:
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Final answer:
The mass of the water sample can be calculated using the formula for heat absorption: Q = mcΔT.
Given that the water sample absorbed 4300 joules of heat and the temperature increased from 15°C to 39°C, the mass of the water sample is approximately 43.03 grams.
Explanation:
This physics problem can be solved by using the formula for heat absorption:
Q = mcΔT,
where Q is the heat absorbed (in joules), m is mass (in grams), ΔT is the change in temperature (in °C) and c is the specific heat capacity. For water, c is 4.186 joules/gram°C.
The change in temperature (ΔT) of the water sample is the final temperature (39°C) minus the initial temperature (15°C), which equals 24°C.
Using the given value for Q (4300 joules), we rearrange the formula to calculate m (mass):
m = Q / (cΔT) = 4300 / (4.186*24) ≈ 43.03 grams.
Thus, the mass of the water sample is approximately 43.03 grams.
Learn more about Heat Absorption here:
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What elements as a in stainless steel?
And how (%) of each element
Just answer one question if u want
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This is why metals bend.
Because medal can get weak when used to much!!!
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Answer:
mass Mg = 1.937 Kg
Explanation:
from periodic table for Mg:
⇒ molecular mass Mg = 24.305 g/mol
∴ mol ≡ 6.022 E23 atoms
⇒ mol Mg = (4.80 E25 atoms)×(mol/6.022 E23 atoms)
⇒ mol Mg = 79.708 mol
⇒ mass Mg = (79.708 mol)×(24.305 g/mol)
⇒ mass Mg = 1937.3 g
⇒ mass Mg = 1.937 Kg
And then, explain why you chose your answer.
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In a chemical change, chemical properties change and new products are formed. In burning, coal is obtained, and the chemical properties change of any substance, be it wood, charcoal or anything. Gas is also evolved, which shows that a chemical change has taken place.
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Answer:
CuO(s) + H₂(g) → Cu(s) + H₂O(l)
Explanation:
- Assuming the reaction is the reduction of CuO by H₂
- Then the balanced equation for the reaction is;
CuO(s) + H₂(g) → Cu(s) + H₂O(l)
- The equation shows the reducing property of hydrogen gas, such that hydrogen reduces metal oxides such as copper(ii)oxide to the respective metals.
- The law of conservation requires chemical equations to be balanced so as the mass of reactants will be equal to that of products.
- In this case; there is 1 copper atom, 1 oxygen atom and 2 hydrogen atoms on both side of the equation and thus the equation is balanced.