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4 years ago

How to write mole ratio of 4p + 5o2 = 2p2o5

1 answer:

8 0

Mole ratio is equal to 4 moles to give 5 mole of oxygen and 2 moles of the product . writing the mole ratio of a reaction does not require or is not a special procedure , just write the stoichiometric coefficients of all reacting substances .So in this case just say 4 is to 5 is to 2. Sorry i cant find my ratio sign so take the (is to) as aratio symbol

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It is always feasible that a substance will dissolve in water when:

Rom4ik [11]

Answer:

i think it A

Explanation:

3 0

4 years ago

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If the point of the nail can be approximated as a circle with

maw [93]

Answer:

P = 795.77 Mpa

Explanation:

Given that,

Force exerted by the hammer, F = 10⁴ N

The nail can be considered as a circle with radius of $2\times 10^{-3}\ m$

We need to find the pressure exerted on the wall. Pressure is equal to force acting per unit area. So

$P=\dfrac{F}{A}\\\\P=\dfrac{10^4\ N}{\pi \times (2\times 10^{-3})^2}\\\\P=795774715.45\ Pa$

We know that, 1 MPa = 1000000 Pa

So, P = 795.77 Mpa

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7 0

3 years ago

5. The element copper has naturally occurring isotopes with mass numbers of 63

Mademuasel [1]

Answer:

Average atomic mass = 63.62 amu.

Explanation:

Abundance of Co⁶³ = 69.2%

Abundance of Co⁶⁵ = 30.8%

Atomic mass of Co⁶³ = 63 amu

Atomic mass of Co⁶⁵ = 65 amu

Average atomic mass = ?

Solution:

Average atomic mass = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass) / 100

Average atomic mass = (63×69.2)+(65×30.8) /100

Average atomic mass = 4359.6 + 2002 / 100

Average atomic mass = 6361.6 / 100

Average atomic mass = 63.62 amu.

4 0

3 years ago

HELPPPPP<br><br> A: <br> B: <br> C: <br> D: <br> E:

d1i1m1o1n [39]

<h2>A : Hamstrings</h2><h2 /><h2>B : Ligament</h2><h2 /><h2>C : Meniscus</h2><h2 /><h2>D : * think this is Ligament too! hope im right</h2><h2 /><h2>E : Femur (Thigh Bone)</h2>

4 0

3 years ago

Based upon the mass of baking soda (NaHCO3) and using an excess of HCl in this experiment, you will 1) determine the mass of CO2

weqwewe [10]

Equation of reaction

NaHCO3 + HCl ---------> NaCl + H2O + CO2(g)

1)The mass(actual yield) of CO2 can be gotten by isolating it from other products and getting its mass.

Assume 1.0g of CO2 was gotten as a product of the experiment

2) For the theoretical yield

The mass of NaHCO3 was not stated, but for the purpose of this solution, I would assume 2g of NaHCO3 was used for the experiment. You can substitute any parameter by following the steps I follow

Number of mole of NaHCO3 = Mass of NaHCO3/ Molar Mass of NaHCO3

Number of mole of NaHCO3 = 2/84.01 = 0.0238 moles

1 mole of NaHCO3 yielded 1 mole of CO2

0.0238 moles of NaHCO3 will yield 0.0238 moles of CO2

Mass of CO2 = Number of moles * Molar Mass

Mass of CO2 = 0.0238 * 44 = 1.0472g

Theoretical yield of CO2 = 1.0472 grams

3) Percentage yield of CO2 = Actual yield/Theoretical yield *100%

Percentage yield of CO2 = 1.0/1.0472 *100

Percentage yield of CO2 = 95.49%

8 0

4 years ago

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