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3 years ago

What is the net ionic equation for ammonia and phosphoric acid?

Chemistry

1 answer:

olganol [36]3 years ago

7 0

N<span>et ionic equation for ammonia and phosphoric acid</span> is
3 NH4OH + H3PO4 >> (NH4)3PO4 + 3 H2O
hope this helps

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Perform the calculations and determine the absolute and percent relative uncertainty. Express each answer with the correct numbe

Lana71 [14]

Answer:

Explanation:

Given the equation:

$\implies \dfrac{[9.8(\pm0.3)-2.31(\pm 0.01)]}{8.5(\pm0.6)}$

The absolute uncertainty in a measurement is the term used to describe the degree of inaccuracy.

The first step is to determine the algebraic value on the numerator.

Algebraic value = 9.8 - 231

= 7.49

The absolute uncertainty = $\sqrt{(abs. uncertainty_{v_1})^2+(abs. uncertainty_{v_2})^2}$

absolute uncertainty = $\sqrt{(0.3)^3 + (0.01)^2}$

= $\sqrt{0.09 + 0.0001}$

= 0.300167

∴

[9.8(±0.3) - 2.31(±0.01)] = 7.49(±0.300167)

The division process now is:

$\implies \dfrac{[9.8(\pm0.3)-2.31(\pm 0.01)]}{8.5(\pm0.6)}= \dfrac{7.49 (\pm 0.300167)}{8.5 (\pm0.6)}$

Relative uncertainty = $\dfrac{(\pm 0.300167)}{7.49}\times 100 \ , \ \dfrac{(\pm 0.6) }{8.5} \times 100$

Relative uncertainty = ±4.007565% , ±7.058824%

$\text{Relative uncertainty} = \sqrt{(4.007565)^2+(7.058824)^2}$

$\text{Relative uncertainty} = \sqrt{16.06057723+49.82699626}$

$\text{Relative uncertainty} = \sqrt{65.88757349}$

$\text{Relative uncertainty} = 8.117116$

≅ 8%

The algebraic value = $\dfrac{7.49}{8.5}$

= 0.881176

≅ 0.88

The percentage of the relative uncertainty = $\dfrac{\text{Absolute uncertainty }}{\text{calculated value} }\times 100$

By cross multiplying:

$\text{Absolute uncertainty} (\%) = \dfrac{\text{relative uncertainty} \times \text{calculated value}}{100}$

$\text{Absolute uncertainty} (\%) = \dfrac{8.117116\times 0.881176}{100}$

$\text{Absolute uncertainty} (\%) = 0.0715260$

$\mathbf{\text{Absolute uncertainty} (\%) \simeq 0.07}$

Finally:

$\mathbf{\implies \dfrac{[9.8(\pm0.3)-2.31(\pm 0.01)]}{8.5(\pm0.6)}= 0.88 \pm (0.07) \pm 8\%}$

8 0

2 years ago

I can hit a metal with a hammer without the metal shattering because of its

kati45 [8]

Answer: Malleability

Explanation: cuz ... its right ... lol

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2 years ago

What mass of H₂O is formed when excess H₂ reacts with 64 g of O₂

taurus [48]

Answer: 72 g of $H_2O$ is formed.

Explanation:

To calculate the moles :

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

$\text{Moles of} O_2=\frac{64}{32}=2moles$

$2H_2+O_2(g)\rightarrow 2H_2O$

As $H_2$ is the excess reagent, $O_2$ is the limiting reagent as it limits the formation of product.

According to stoichiometry :

1 mole of $O_2$ produce= 2 moles of $H_2O$

Thus 2 moles of $O_2$ will require= $\frac{2}{1}\times 2=4moles$ of $H_2O$

Mass of $H_2O=moles\times {\text {Molar mass}}=4moles\times 18g/mol=72g$

Thus 72 g of $H_2O$ is formed.

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2 years ago

What is the maximum number of covalent bonds a carbon atom can form with other atoms?

garri49 [273]

(C.) Each carbon atom in ethane forms 4

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2 years ago

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(02.05 LO<br> Which type of heat transfer takes place through electromagnetic waves? (3 points)

Alex777 [14]

RADIATION ❤️

We know that radiation is defined as he transfer of heat energy by electromagnetic radiation.

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2 years ago