WORTH 20 POINTS!! Need answer ASAP

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

Answer:

Answer:

the ability for a given substance, the solute to dissolve in a solvent is solubility.

Answer:

the ability for a given substance, the solute to dissolve in a solvent is solubility.

Answer:

https://socratic.org/questions/how-many-grams-are-in-1-25-x-10-22-atoms-of-oxygen#403337

Explanation:

Answer:

0.895 mL

Explanation:

Using the formula;

C1V1 = C2V2

Where;

C1 = initial concentration (M)

C2 = final concentration (M)

V1 = initial volume (mL)

V2 = final volume (mL)

According to the information provided in this question;

C1 = 15.54M

V1 = ?

C2 = 2.28M

V2 = 6.1 mL

Using C1V1 = C2V2

V1 = C2V2 ÷ C1

V1 = (2.28 × 6.1) ÷ 15.54

V1 = 13.908 ÷ 15.54

V1 = 0.895 mL

Answer:

b option to is correct and answer bro

Answer:

the answer is gravity

hope this helps

Answer:

B) On genes within chromosomes

Explanation:

Answer:

B) On genes within chromosomes

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 : )

Answer:

The atoms become cations because they have lost electrons and the atoms and has a positive charge then atoms become a ions because they have gained electrons from cations and has a negative charge

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.

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.

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Answer:

Option 2: X is the screening constant, & it remains constant across a period.

Explanation:

I took the test and got the question correct :)

As we move across the period, X is the screening constant, and it remains constant across a period.

As we move across the period, the size of atoms become smaller because of an increase in the size of the nuclear charge. This leads to a decrease in atomic radius.

As the size of atom decreases, the screening effect on the outermost electron decreases accordingly. Hence, as we move across the period, X is the screening constant, and it remains constant across a period. This is because, no new shells are added across the period.

Learn more: https://brainly.com/question/1248133

Answer:

1392. g CO2

Explanation:

Answer:

2Mg + 4HCl (aq) --> 2 MgCl2 (aq) + H2

Explanation:

balanced...

Answer:

B

Explanation:

Jupiter is the fastest spinning planet.

To solve such this we must know the concept of double displacement reaction. Therefore, copper (Cu) and silver (Ag) would not liberate hydrogen from dilute tetraoxosulphate(vi) acid.

Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.

Copper (Cu) and silver (Ag) would not liberate hydrogen because they are less reactive than hydrogen since their standard reduction potential is higher.

Therefore, copper (Cu) and silver (Ag) would not liberate hydrogen from

dilute tetraoxosulphate(vi) acid.

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Answer:

Exothermic reaction

Explanation:

An exothermic process releases heat, causing the temperature of the immediate surroundings to rise

Answer:

Endothermic

Explanation:

Answer:

testosterone is released from their testes!

Answer:

b

Explanation:

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.

Answer:

A

Explanation:

hail will fall push it back up making it bigger comes back down

Answer: Alpha

Explanation:

Alpha particle form of decay produces a nucleus similar to the element helium. During Alpha decay an atom spits out two protons and two neutrons from its nucleus.

Answer:

D) Bees and plants or sea anemonies and clownfish.

i think..

Explanation:

A pearlfish spends the day inside the alimentary tract, or intestines, of a sea cucumber. The fish emerges from the sea cucumber at night to feed on small crustaceans. The pearlfish gets a safe place to live. The sea cucumber does not gain anything from the relationship, nor is it harmed. This is similar to the relationship between bees and plants or sea anemonies and clownship and the correct option is option D.

Symbiosis is a close relationship between two species in which at least one species benefits.

For the other species, the relationship may be positive, negative, or neutral.

There are three basic types of symbiosis: mutualism, commensalism, and parasitism.

Mutualism is a symbiotic relationship in which both species benefit. Commensalism is a symbiotic relationship in which one species benefits while the other species is not affected.

One species typically uses the other for a purpose other than food. Parasitism is a symbiotic relationship in which one species (the parasite) benefits while the other species (the host) is harmed.

Therefore, a pearlfish spends the day inside the alimentary tract, or intestines, of a sea cucumber. The fish emerges from the sea cucumber at night to feed on small crustaceans. The pearlfish gets a safe place to live. The sea cucumber does not gain anything from the relationship, nor is it harmed. This is similar to the relationship between bees and plants or sea anemonies and clownship and the correct option is option D.

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[tex] \huge\mathrm {Answer࿐}[/tex]

[tex] \mathrm{2Na + Cl_2 \rightarrow2NaCl}[/tex]

In the above equation, the product formed is :

[tex] \large\boxed{ \mathrm{NaCl}}[/tex]

_____________________________

[tex]\mathrm{ \#TeeNForeveR}[/tex]

Answer:

The answer is 0.30 m/s

Explanation:

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