Answer:
B) On genes within chromosomes
Explanation:
Answer:
B) On genes within chromosomes
Vitamin B12, cyanocobalamin, is essential for human nutrition. It is concentrated in animal tissue but not in higher plants. Although nutritional requirements for the vitamin are quite low, people who abstain completely from animal products may develop a deficiency anemia. Cyanocobalamin is the form used in vitamin supplements. It contains 4.34% cobalt by mass. Calculate the molar mass of cyanocobalamin, assuming that there is one atom of cobalt in every molecule of cyanocobalamin. WebAssign will check your answer for the correct number of significant figures. g/mol
Answer:
645 g/mol
Explanation:
Step 1: Given data
Percent by mass of cobalt in cyanocobalamin: 4.34%
Step 2: Determine the molar mass of cyanocobalamin
There is one atom of cobalt in every molecule of cyanocobalamin, or what is the same, there is 1 mole of atoms of Co in every mole of molecules of cyanocobalamin. Given the molar mass of Co is 28.01 g/mol, the molar mass of cyanocobalamin is:
100 g B12/4.34 g Co × 28.01 g Co/1 mol Co × 1 mol Co/1 mol B12 = 645 g/mol
please help me with this question !
Answer: i dont understand
Explanation:
Question
What is the name of this ben zene ?
the name of this benzene is benzene circle
if you also don't understand the go in this link
https://en.m.wikipedia.org/wiki/File:Benzene_circle.svg
plz give me brainliest+ thanks i need it to reach in expert : )
Will give brainliest!
How does the melting of ice caps near the North Pole affect the salinity of the ocean?
Salinity decreases because freshwater flows into the ocean
Salinity increases because of the stored pockets of air and salt
Salinity increases because salt from the ice caps flows into the ocean
There is no change in the ocean’s salinity with this process
Answer:
A.
Explanation:
melting of ice will increase water in oceans due to which water in oceans will increase and salinity will decrease. hence, melting of ice caps near the north pole affects salinity of the ocean
in what group and periods is most reactive metals
BRANLIEST NO EXPLANATION NEEDED.
When a cube of manganese oxide was added to a solution of hydrogen peroxide, water and oxygen were produced. Manganese oxide was not used up in the reaction. Which of the following is likely to increase the rate of the reaction? (5 points)
Reducing the mass of the cube
Using a smaller amount of solution
Smashing the cube into pieces
Chilling the hydrogen peroxide solution
Answer:
Smashing the cube into pieces
Explanation:
The reason for this is that if we were to smash the cube we would have a larger surface area which means more manganese oxide would be dissolving per second which means we would have a faster reaction rate where if we were to chill the peroxide it would dissolve slower which in turn slows the reaction. For example a spoonful of granulated sugar will react with water faster than a sugar cube.
The rate of the reaction is increased by smashing the cube into pieces. C is the correct answer.
What is the reaction rate?The reaction rate, also known as the rate of reaction, is the rate at which a chemical reaction occurs.
It is typically classified as proportional to the change in product concentration per unit time and the change in reactant concentration per unit time. Different chemical reactions have different reaction rates.
The amount of reactants, the temperature, and the catalyst all influence the reaction rate.
When a cube of manganese oxide was added to a solution of hydrogen peroxide, water and oxygen were produced, just as in the given reaction. The reaction did not deplete manganese oxide.
The reaction will be altered by smashing the cube into pieces as the it can boost appropriate conditions for the reaction.
Thus, C is the correct answer.
For more information on reaction rate, go to:
brainly.com/question/13440548
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The alignment of the Sun, Earth and Moon can produce shadows on the Earth or Moon
resulting in:
very long nights
equinox
solar and lunar eclipses
longer seasons
Answer:
SOLAR AND LUNAR ECLIPSEA supersaturated solution is said to contain
Explanation:
A solution that contains more than the maximum amount of solute that is capable of being dissolved at a given temperature.
I hope it helps
Answer:
A supersaturated solution is said to contain more solute than it can dissolve at that given temperature.
Mg (s) + 2 HCl (aq) --> MgCl2 (aq) + H2 (g)
Use the equation above to determine the number of grams of magnesium chloride, MgCl2 , that can be produced if 4.00 moles of HCl (hydrochloric acid) react. please show all work and record your answer with proper units and significant figures.
Pls help
Answer:
m = 190. g MgCl2
Explanation:
Use a molar ratio to get the # of moles MgCl2 produced from 4.00 mol of HCl:
4.00 mol HCl × (1 mol MgCl2/2 mol HCl) = 2.00 mil MgCl2
So 2.00 moles of MgCl2 will be produced. To find the mass in grams, use the molar mass of MgCl2:
2.00 mol MgCl2 × (95.211 g MgCl2/1 mol MgCl2)
= 190. g MgCl2
What are 3 kinds of moles
The tapir and agouti are ___________ found in the Amazon Rainforest.
A.Carnivores
B.Omnivores
C. Herbivores
D. Decomposers
"science"
What is the concentration of a solution made by dissolving 0.99mol of acetic acid in enough water to make 0.58L of solution?
Answer:
[CH₃COOH] = 1.70 M
Explanation:
When we talk about concentration we can determine Molarity
Molarity determines the moles of solute that are contained in 1L of solution.
In this case our solute is the acetic acid.
M = mol/L
M = 0.99 mol /0.58L → 1.70 M
We can also make a rule of three
In 0.58 L of solution we have 0.99 moles of solute
In 1 L of solution we may have (1 . 0.99) / 0.58 = 1.70 moles
Acetic acid is a weak acid, partially dissociated in water.
CH₃COOH + H₂O ⇄ CH₃COO⁻ + H₃O⁺ Ka
A bowling ball is let go from a height of 30 cm. What is the velocity of the
ball just before it hits the ground?
Select one:
о
0.30 m/s.
О
17 m/s.
O
24 m/s
a
1.3 m/s
Answer:
The answer is 0.30 m/s
Explanation:
i search it on
How many grams equal 4.3 x 1024 atoms of oxygen (O2)?
Answer:
https://socratic.org/questions/how-many-grams-are-in-1-25-x-10-22-atoms-of-oxygen#403337
Explanation:
The initial temperature of a reaction is 24.7 °C. The temperature decreases by 3.2 °C. What is the new temperature of the reaction? Someone help
Answer:
I think it's 21.5 *C
Explanation:
Please help I will mark you brainiest
What are one advantage and one disadvantage of sexual reproduction?
What is one advantage and one disadvantage of asexual reproduction?
Answer:asexual- Energy is not required to find a mate. Offspring are genetic clones. A negative mutation can make asexually produced organisms susceptible to disease and can destroy large numbers of offspring. Some methods of asexual reproduction produce offspring that are close together and compete for food and space.
Explanation:During sexual reproduction the genetic material of two individuals is combined to produce genetically diverse offspring that differ from their parents.
I NEED THIS ASAP Someone please help me
Read the chemical equation. 2NaOH + H2SO4 → Na2SO4 + 2H2O Which of the following statements would be correct if four moles of NaOH were used in this reaction?
A. Two moles of water were produced from this reaction.
B. Four moles of water were produced from this reaction.
C. One mole of H2SO4 was used in this reaction.
D. Eight moles of H2SO4 were used in this reaction.
Answer:
the answer is B
Explanation:
Answer: B!
Explanation:
B. Four moles of water were produced from this reaction.
got it right on the test :-)