To what volume in millimeters must 50.0 mL of 18.0 M H2SO4 be diluted to obtain 4.35 M H2SO4?
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**NOTE: The volume as indicated in this question is defined in L, not mL, so that conversion must be made. However it is 1000 mL = 1 L.
So now we can assign values to these variables. Let us say that the 18 M
We can then solve for
We now know that the total amount of volume of the 4.35 M solution will be 210 mL. This is assuming that the entirety of the 50 mL of 18 M is used and the rest (160 mL) of water is then added.
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Radioactive cobalt-60 is used in radiation therapy treatment. Cobalt-60 undergoes beta decay. This type of nuclear reaction is called(1) natural transmutation(2) artificial transmutation(3) nuclear fusion(4) nuclear fission
In a 0.01 M solution of HCl, Litmus will be
When layered into a single column, which water will sink to the bottom? A. cold water with no salt B. warm water with no salt C. warm, salty water D. cold, salty water
c. polymer
b. isomer
d. elements
Answers
Final answer:
A polymer is a large molecule consisting of many repeating structural units or monomers. The process of formation is called polymerization.
Explanation:
The correct answer to this question is c. polymer. Polymers are large molecules made up of repeating subunits known as monomers. The process in which these monomers connect to form a polymer is called polymerization. An example of a polymer is plastic, which consists of many repeating units of smaller molecules.
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It will take 10 years for the account to double in value.
What is account?
Account is defined as a record in an accounting system that keeps tabs on the financial transactions involving a particular asset, obligation, equity, source of income, or expense. It is used to document financial transactions, totals, or balances related to assets, liabilities, income, outlays, and owner equity.
Given future value = 2 x 5,000 = $10,000
Present value = $5,000
Interest rate = 7%
n = number of periods to double in value
The value of n can be calculated as
FV = PV x ( 1 + r ) ⁿ
10,000 = 5,000 x ( 1 + 0.07 ) ⁿ
2 = 1.07 ⁿ
n = ln ( 2 ) / ln ( 1.07 )
n = 10.24
Thus, it will take 10 years for the account to double in value.
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b. green
water solutions have neutral pH ( ~7) so the indicator will turn green
Final answer:
Bromothymol blue would become green when added to water, due to water's neutral pH of around 7. This response uses pH levels and the color changes of bromothymol blue as indicators of acidity or basicity.
Explanation:
The color of bromothymol blue in water would be green. That's because the pH level of pure water is around 7, which falls within the range of 6 to 8 where bromothymol blue would turn green. Bromothymol blue is an indicator used in chemistry to identify pH levels by presenting different colors in solutions of different pHs: it turns yellow in solutions under pH 6, green between pH 6 to 8, and blue when the pH is above 8.
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The answer is Red and Blue light.
b. the energy required to remove an electron from the element in its gaseous state
c. the energy released by the element in forming an ionic bond
d. the energy released by the element upon receiving an additional electron
e. none of the above
Answers
The ionization energy is energy required to remove an electron from element in it's gaseous state.
What is ionization energy?
Ionization energy is defined as the minimum energy required to remove an electron from its valence shell of an isolated gaseous atom,positive ion or molecule.Ionization energy is positive for neutral atoms from which it can be concluded that ionization is an endothermic process.
Closer are the valence electrons to nucleus ,higher is the ionization energy.It is usually expressed in electron volts or joules.Ionization energy increases from left to right in a period as more energy is required to remove electrons with small atomic size.
Ionization energy decreases down the group as atomic size increases due to which electrons are easily lost from the valence shell.
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