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3 years ago

How do human obtain the nitrogen they use in their bodies

1 answer:

8 0

Humans get<span> the </span>nitrogen<span> they need by eating vegetebles or other meat that contain </span>nitrogen<span>. hope it helps :)</span>

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Fill in the coefficients that will balance the following reaction:<br> Pbl4 +CrCl₂-PbCl₂ + Crl₂

nirvana33 [79]

Answer:

see in the science book

Explanation:

see in the science book

8 0

2 years ago

Read 2 more answers

Determine the limiting reactant in each of the following reactions:

wolverine [178]

The reactant in a chemical process known as the limiting reactant controls how much product can be produced. When the limiting reactant is completely used up, the reaction will come to an end.

<h3>Find the limiting reactant ?</h3>

As a result of 1 mol Sb4O6 reacting with 6 mol H2SO4, only 0.1 mol Sb4O6 reacts with 0.6 mol H2SO4, leaving only 0.5 mol H2SO4. This indicates that H2SO4 is the limiting reactant and Sb4O6 is present in excess.
According to your equation, which is balanced, 0.1 mol Sb4O6 should react with 0.6 mol H2SO4, yet there is only 0.5 mol H2SO4 on hand.
Therefore, only.083 mol of Sb4O6 are reacted.
The reactant that is present in the limiting amount—the limiting reactant—determines the extent to which a chemical reaction occurs.
The trick is really quite easy! We employ an augmented matrix to hold the data derived from the balancing equation Sb4O6 + 6H2SO4 --> 2Sb2(SO4)3 + 6H2O.
Although you are provided 0.5 mol of H2SO4, the reaction requires 0.6 mol. Therefore, the limiting reactant is H2SO4.
Only 0.0833 mol of Sb4O6 is required, but you have 0.1 mol. Sb4O6 is therefore the extra reactant.

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3 0

1 year ago

If you flow a solution of Mg CO3-- in water over a Cation resin, what will be in the outlet stream leaving the bed

vodka [1.7K]

In a a cation-exchange resin, the outlet stream leaving the bed will contain $H^{+}$ and $CO_3 ^{2-}$ .

<h3>What is cation-exchange resin?</h3>

A resin or polymer that serves as a medium for ion exchange is known as an ion-exchange resin or cation-exchange resin.
It is an insoluble matrix (or support structure) made from an organic polymer substrate, typically appearing as tiny (0.25-1.43 mm radius) microbeads that are white or yellowish in color.
The process is known as cation-exchange resin because the beads are often porous, providing a wide surface area on and inside them where the trapping of ions takes place along with the concomitant release of other ions.
cation-exchange resin comes in many different varieties. Polystyrene sulfonate is the main ingredient in most commercial resins. Many diverse separation, purification, and decontamination techniques use cation-exchange resin.
The most typical examples are water filtration and water softening.

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8 0

2 years ago

How much heat is added if 0.814g of water increase in temperature by 0.351 degree C

steposvetlana [31]

Answer:

1·199 J

Explanation:

Given

Mass of water = 0·814 g = 0·814 × $10^{-3}$ kg

Increase in temperature = 0·351 °C

Let the amount of heat added be Q J

Formula for heat added is

where Q is the amount of heat transferred

m is the mass

s is the heat capacity

ΔT is the change in temperature

Heat capacity of water = 4200 J/kg °C

Applying the formula for heat added

Q = 0·814 × $10^{-3}$ × 4200 × 0·351 = 1·199 J

∴ Amount of heat added = 1·199 J

8 0

4 years ago

4. What happens to the bond angle when you add or remove an electron domain?

Vaselesa [24]

Answer:

Bond angle is affected by the presence or addition of lone pair of electrons at the central atom. Due to this, the bonds are displaced slightly inside resulting in a decrease of bond angle, and when you remove an electron domain the bond angle increases.

Explanation:

4 0

3 years ago