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4 years ago

A ____________ contains specific instructions for making proteins.

Chemistry

2 answers:

ExtremeBDS [4]4 years ago

7 0

Answer:

ribosome i think or cant u google that

Masja [62]4 years ago

7 0

C. a gene contains specific instructions for making proteins

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What is the silver ion concentration in a solution prepared by mixing 369 mL 0.373 M silver nitrate with 411 mL 0.401 M sodium c

LuckyWell [14K]

Answer:

[A g + ] = 3.12 *10^-6 M

Explanation:

Step 1: Data given

Volume silver nitrate = 369 mL

Molarity silver nitrate = 0.373 M

Volume sodium chromate = 411 mL

Molarity sodium chromate = 0.401 M

The Ksp of silver chromate is 1.2 * 10^− 12

Step 2: The balanced equation

2 A g + ( a q ) + C rO4^2- ( a q ) →Ag2CrO4 ( s)

Step 3:

[Ag+]i = [AgNO3] * V1/(V1+V2) * 1 mol Ag+ / 1 mol AgNO3

[Ag+]i = 0.373 M * 0.369/ (0.369+0.411)

[Ag+]i = 0.176 M

[C rO4^2]i = [Ag2CrO4] * V2 /(V1+V2) * 1mol C rO4^2 / 1 mol Ag2CrO4

[C rO4^2i = 0.401 M * 0.411 / (0.369+0.411)

[C rO4^2]i = 0.211 M

Ksp = [Ag+]²[CrO4^2-] = 1.2 * 10^− 12

[CrO4^2-]f = [CrO4^2-]i - 0.5 * [Ag+]i

[CrO4^2-]f = 0.211 -0.088 = 0.123 M

1.2 * 10^− 12 = ( 2 x ) ²*( 0.123M + x )

[ C O 3^ −2] f >> x

1.2 * 10^− 12 = ( 2 x ) ²* 0.123M

x = 1.56 * 10^-6

[A g + ] f = 2x = 3.12 *10^-6 M

4 0

3 years ago

Which compounds, on heating with an excess of concentrated sulfuric acid, produce only one product with molecular formula C7H10?

podryga [215]

Answer:

1 and 2

Explanation:

When Concentrated H2SO4 reacted with the alcohols, they produce cycloalkenes. This is a mechanism known as dehydration of alcohols with an acid catalyst. This is because concentrated H2SO4 acts as a great oxidizing agent. In the process, the alcohols are heated to a high temperature with an excess of pure sulfuric acid. By passing the gases through a sodium hydroxide solution, the carbon dioxide and sulfur dioxide produced by reactive species are eliminated. The reaction mechanism shown in the image below indicates that only compounds 1 and 2 produce only one product.

8 0

3 years ago

How many moles of KOH are in 130.0 mL of a 0.85 M solution of KOH? Please help ASAP!!! :(

lana [24]

Answer:

0.1105 moles per 130 ml

Explanation:

For 1 L (1000) of solution, no of moles are = 0.85

For 1 ml of solution, no of moles are = 0.85/1000 moles

For 130 ml of solution, no of moles are= 0.85/1000 x 130

= 0.1105 moles per 130 ml

7 0

4 years ago

A student visits the beach during a very hot day. She steps on the sand and jumps because it is so hot. What type of heat transf

sammy [17]

Answer is: thermal conductuction.
Thermal conductuction is the transfer of heat through physical contact. Thermal conduction is the transfer of heat by microscopic collisions of particles. Heat spontaneously flows from a hotter to a colder body.
The process of heat conduction depends on four basic factors: the temperature gradient, the cross section of the materials involved, their path length and the properties of those materials.

3 0

4 years ago

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What force can move the oceans

vampirchik [111]

Ocean currents can be moved by wind, density differences in water masses caused by temperature and salinity variations, gravity, and events like earthquakes.

8 0

4 years ago

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