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erastovalidia [21]
3 years ago
10

8. The density of an iron nail is the same as the density of an iron frying pan. Explain

Chemistry
1 answer:
snow_lady [41]3 years ago
6 0
A pure iron frying pan will have the same density as a pure iron anything under the same conditions, however pure iron is rarely used to make things. As their is carbon and traces of various metals, so the density will typically be slightly different, you can lower the density of the item with slightly higher density by heating it but leaving the lower density item cooler. Density is property of material that is independent of shape, volume, size and mass.
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Is a substance that a filter can seperate into two parts a mixture or a pure substance?
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Mixture. Mixtures can be separated into their component parts, while substances are chemically bonded atoms that can't be separated by physical means.
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Electrons always fill orbitals in the same order. Each s orbital holds 2 electrons, each set of p orbitals holds 6 electrons, ea
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Oxygen is the answer :)

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3 years ago
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what is the primary function of the cells that make up the majority of cells in the muscular system ​
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3 years ago
At 150°C the decomposition of acetaldehyde CH3CHO to methane is a first order reaction. If the
Crank

The decomposition time : 7.69 min ≈ 7.7 min

<h3>Further explanation</h3>

Given

rate constant : 0.029/min

a concentration of  0.050 mol L  to a concentration of 0.040 mol L

Required

the decomposition time

Solution

The reaction rate (v) shows the change in the concentration of the substance (changes in addition to concentrations for reaction products or changes in concentration reduction for reactants) per unit time

For first-order reaction :

[A]=[Ao]e^(-kt)

or

ln[A]=-kt+ln(A0)

Input the value :

ln(0.040)=-(0.029)t+ln(0.050)

-3.219 = -0.029t -2.996

-0.223 =-0.029t

t=7.69 minutes

4 0
3 years ago
Under a certain set of conditions, the percent yield of a reaction that produces carbon dioxide is 75.0%. What mass in grams of
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Answer:

Actual yield = 20.03g

Explanation:

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Actual yield = % yield.(theoretical yield) / 100

Actual yield = 75.26.7/100

Actual yield = 20.025

6 0
3 years ago
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