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NeTakaya
3 years ago
10

PLEASE HELP ME ASAP URGENT IM STRESSED AND STUCK

Chemistry
1 answer:
Genrish500 [490]3 years ago
8 0
Is there any more info lol
But from thinking I got A=DH^2*BC
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Clear
maks197457 [2]

Zirconium - 96 isotope is formed from the beta decay of zirconium-97 , Option C is the correct answer .

<h3>What are Isotopes ?</h3>

Atoms are composed of a cloud of electrons surrounding a dense nucleus that is 100,000 times smaller and comprised of protons and neutrons.

The number of protons(i.e., atomic number, "Z") determines the element.

Isotopes are atoms of the same element that have the same number of protons (i.e., atomic number, "Z") but a different number of neutrons, meaning that their mass number, "A", varies.

Naturally occurring zirconium (⁴⁰Zr) is composed of four stable isotopes

One very long-lived radio isotope (⁹⁶Zr), a primordial nuclide that decays via double beta decay with an observed half-life of 2.0×10¹⁹ years

The second most stable radioisotope is ⁹³Zr, which has a half-life of 1.53 million years.

Thirty other radioisotopes have been observed.

All have half-lives less than a day except for ⁹⁵Zr (64.02 days), ⁸⁸Zr (83.4 days), and ⁸⁹Zr (78.41 hours).

The primary decay mode is electron capture for isotopes lighter than ⁹²Zr

and the primary mode for heavier isotopes is beta decay.

Therefore Zirconium - 96 isotope is formed from the beta decay of zirconium-97 , Option C is the correct answer .

To know more about Isotope

brainly.com/question/11680817

#SPJ1

3 0
2 years ago
Determine the mass of an object that has a volume of 88.6 ml and a density of 9.77 g/ml.
Nostrana [21]
Given:
The volume is V = 88 mL
Density, d = 9.77 g/mL

Because mass = volume *  density, therefore the mass of the object is
m = (88.6 \, mL)*(9.77 \,  \frac{g}{mL} )=865.62 \, g

Answer: The mass is 865.2 g  or  0.865 kg
4 0
4 years ago
What is happening to the particles in a substance during evaporation?
AysviL [449]
During evaporation, liquid particles on the surface momentarily gain enough energy due to random thermal motion to overcome the intermolecular attractions and escape into the gas phase. These evaporating particles, by virtue of gaining energy, also increase in velocity.

Thus, the correct answer here would be the third choice.
8 0
3 years ago
Read 2 more answers
Draw and label a diagram to show how you would separate each mixture?
aksik [14]
Separate the nails and circles with a magnet and the fishes with a net
4 0
4 years ago
How much CO2 is produced from the combustion of a tank of propane C3H8? Assume the tank contains 9kgs of propane and the molecul
Zinaida [17]

<u>Answer:</u> The mass of carbon dioxide produced is 26.9 kg

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}      .....(1)

Given mass of propane = 9 kg = 9000 g    (Conversion factor:  1 kg = 1000 g)

Molar mass of propane = 44.1 g/mol

Putting values in equation 1, we get:

\text{Moles of propane}=\frac{9000g}{44.1g/mol}=204.08mol

The chemical equation for the combustion of propane follows:

C_3H_8+5O_2\rightarrow 3CO2+4H_2O

By Stoichiometry of the reaction:

1 mole of propane produces 3 moles of carbon dioxide.

So, 204.08 moles of propane will produce = \frac{3}{1}\times 204.08=612.24mol of carbon dioxide.

Now, calculating the mass of carbon dioxide by using equation 1, we get:

Molar mass of carbon dioxide = 44.01 g/mol

Moles of carbon dioxide = 612.24 moles

Putting values in equation 1, we get:

612.24mol=\frac{\text{Mass of carbon dioxide}}{44.01g/mol}\\\\\text{Mass of carbon dioxide}=(612.24mol\times 44.01g/mol)=26944.7g=26.9kg

Hence, the mass of carbon dioxide produced is 26.9 kg

3 0
3 years ago
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