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4 years ago

HELP PLEASE I WILL MARK YOU AS A BRAINLIEST

Chemistry

1 answer:

never [62]4 years ago

8 0

Answer:

a food pyramid.

Explanation:

the food pyramid shows how autotrophs are at the bottom and how the top predators are at the top, in this case the eagle.

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On another planet, the isotopes of titanium have the given natural abundances. Isotope Abundance Mass (u) 46Ti 70.600% 45.95263

Stells [14]

Answer: The average atomic mass of element titanium is 46.889 amu.

Explanation:

Average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.

Formula used to calculate average atomic mass follows:

$\text{Average atomic mass }=\sum_{i=1}^n\text{(Atomic mass of an isotopes)}_i\times \text{(Fractional abundance})_i$ .....(1)

For isotope 1 (Ti-46) :

Mass of isotope 1 = 45.95263 amu

Percentage abundance of isotope 1 = 70.600 %

Fractional abundance of isotope 1 = 0.70600

For isotope 2 (Ti-48) :

Mass of isotope 2 = 47.94795 amu

Percentage abundance of isotope 2 = 11.900 %

Fractional abundance of isotope 2 = 0.11900

For isotope 3 (Ti-50) :

Mass of isotope 3 = 49.94479 amu

Percentage abundance of isotope 3 = 17.500 %

Fractional abundance of isotope 3 = 0.17500

Putting values in equation 1, we get:

$\text{Average atomic mass of titanium}=[(45.95263\times 0.70600)+(47.94795\times 0.11900)+(49.94479\times 0.17500)]$

$\text{Average atomic mass of titanium}=46.889amu$

Hence, the average atomic mass of element titanium is 46.889 amu.

6 0

4 years ago

4NH3+5O2=4NO+6H20 if 32.5 grams of NH3 react with enough oxygen, how many grams of water should form?

Aneli [31]

51.3 gram of water should form if 32.5 g of NH₃ react with enough oxygen.

<h3>How to find the Number of moles ?</h3>

To calculate the number of moles use the formula

Number of moles = $\frac{\text{Given Mass}}{\text{Molar Mass}}$

= $\frac{32.5}{17}$

= 1.9 mol

4NH₃ + 5O₂ → 4NO + 6H₂O

4 mol of NH₃ react with oxygen to given 6 mole of water.

So 1.9 mol of NH₃ produces = $\frac{1.9}{4}\times 6$

= 2.85 mol of water

Mass of water = Molar Mass of water × Number of moles of water

= 18 × 2.85

= 51.3 gram

Thus from the above conclusion we can say that 51.3 gram of water should form if 32.5 g of NH₃ react with enough oxygen.

Learn more about the Moles here: brainly.com/question/15356425

#SPJ1

6 0

2 years ago

Choose the correct coefficients for the equation? ____NaCI>____Na+___C12

Wewaii [24]

Explanation:

Ca + NaCl ----> CaCl2 + Na

6 0

3 years ago

The electromagnetic waves consist of vibrating electric and _____ fields.

GaryK [48]

Answer:

Magnetic

Explanation:

Usually if you look the question up on Google or something you can find a Quizlet that has all the answers

5 0

3 years ago

With respect to NO and For the reaction NO + O 3 NO 2 + O 2 , the reaction was expressing concentrations as molarityare the unit

Sliva [168]

Answer:

CXbxcbfvbdffdffzsarg

Explanation:

6 0

3 years ago