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3 years ago

Which option defines solute?

Chemistry

2 answers:

expeople1 [14]3 years ago

5 0

Answer:

The substance that has been dissolved.

Explanation:

topjm [15]3 years ago

5 0

The substance in a solution has been dissolved

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An allele whose trait shows up in an organism when the allele is present is a

dmitriy555 [2]

Dominant allele

Explanation:

An allele whose trait shows up in an organism when the allele is present is called a dominant allele.

An allele whose trait does not show up in an organism when present is called a recessive allele.

An allele is the two possible forms of gene.
A gene can be dominant or recessive in nature.
An allele is a DNA that occupies a particular locus on a chromosome.
They usually occur in pairs.
The allele determines hereditary characteristics.

Learn more:

Genetics brainly.com/question/10607948

#learnwithBrainly

7 0

3 years ago

Help plsssssss... 3C(s) + 2Fe2O3 (5) ► Fe

blondinia [14]

Answer:

single displacement

Explanation:

the Fe was switched out with the C. they are the only ones that switched, making it a single displacement

6 0

3 years ago

Read 2 more answers

One of the reactions that occurs in a blast furnace, in which iron ore is converted to cast iron, is Fe2O3 + 3CO → 2Fe + 3CO2 Su

Tpy6a [65]

Answer : The percent purity of $Fe_2O_3$ in the original sample is 87.94 %

Explanation :

The given balanced chemical reaction is:

$Fe_2O3+3CO\rightarrow 2Fe+3CO_2$

First we have to calculate the mass of Fe.

$\text{Moles of }Fe=\frac{\text{Mass of }Fe}{\text{Molar mass of }Fe}$

Molar mass of Fe = 55.8 g/mole

$\text{Moles of }Fe=\frac{1.79\times 10^3kg}{55.8g/mole}=\frac{1.79\times 10^3\times 1000g}{55.8g/mole}=3.15\times 10^4mole$

Now we have to calculate the moles of $Fe_2O_3$

From the balanced chemical reaction we conclude that,

As, 2 moles of Fe produced from 1 mole of $Fe_2O_3$

So, $3.15\times 10^4mole$ of Fe produced from $\frac{3.15\times 10^4}{2}=15750$ mole of $Fe_2O_3$

Now we have to calculate the mass of $Fe_2O_3$

$\text{ Mass of }Fe_2O_3=\text{ Moles of }Fe_2O_3\times \text{ Molar mass of }Fe_2O_3$

Molar mass of $Fe_2O_3$ = 159.69 g/mole

$\text{ Mass of }Fe_2O_3=(15750moles)\times (159.69g/mole)=2.515\times 10^6g=2.515\times 10^3kg$

Now we have to calculate the percent purity of $Fe_2O_3$ in the original sample.

Mass of original sample = $2.86\times 10^3kg$

$\text{Percent purity}=\frac{\text{Mass of }Fe_2O_3}{\text{Mass of sample}}\times 100$

$\text{Percent purity}=\frac{2.515\times 10^3kg}{2.86\times 10^3kg}\times 100=87.94\%$

Therefore, the percent purity of $Fe_2O_3$ in the original sample is 87.94 %

3 0

3 years ago

When chemicals react with each other which factors decide that a successful reaction has taken place ?

Elodia [21]

The factors that affect the rate of a reaction are:

nature of the reactant - when reactants with different chemical composition are exposed to same conditions they would react differently. For instance, when an acid or base is added on litmus paper, blue litmus paper turns red in presence of acid while red litmus paper turns blue when base is added.
surface area- a compound with small pieces spread over a large area will react faster than a big lump of a compound occupying a small area.
temperature of reaction- reactants would react faster at high temperatures. this is because they have higher kinetic energy to collide with each other. Hence a plate of food on the table spoils faster than a plate of food in the fridge.
concentration- an increase in concentration leads to more molecules available to collide and form products. An example, when you add more of indicator in a solution, the color becomes more clear since more particles react to give more color.
presence of a catalyst- a catalyst lowers the activation energy, which means less energy is required to shift reaction in forward direction. In the presence of iron (Fe) a catalyst, nitrogen N₂ and hydrogen H₂ react to produce NH₃

3 0

4 years ago

Which statement is true about the charges assigned to an electron and a proton?(1) Both an electron and a proton are positive.

Digiron [165]

Answer=3

Electrons carry a negative charge while protons carry a positive charge

6 0

4 years ago

Read 2 more answers