The gravitational potential energy of a basketball : PE = 18.375 J
<h3>Further explanation
</h3>
Given
height = h = 3 m
mass = 0.625 kg
Required
The potential energy
Solution
The energy produced from its position is called potential energy (PE)
which can be formulated as:
PE = m. g. h
(g = 9.8 m/s²)
Input the value :
PE = 0.625 x 9.8 x 3
PE = 18.375 J
The only stable caesium isotope is 133Cs, with 78 neutrons.
Hope this answers your Q
"Every good and perfect gift is from above, coming down from the Father of the heavenly lights, who does not change like shifting shadows."
- James 1:17 NIV
Elements are now organized by increasing atomic mass. Hence, option B is correct.
<h3>What is a periodic table?</h3>
The periodic table is a tabular array of chemical elements organized by atomic number.
Mendeleev's periodic table orders the elements based on their atomic mass whereas the Modern periodic table orders the elements based on their atomic number.
Hence, option B is correct.
Learn more about the periodic table here:
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Answer:
a) 2Mg + TiCl₄ ⟶ 2MgCl₂ + Ti
b) 1.02 kg
Step-by-step explanation:
a) Balanced equation
We know we will need a balanced equation with masses and molar masses, so let’s gather all the information in one place.
M_r: 24.30 47.87
2Mg + TiCl₄ ⟶ 2MgCl₂ + Ti
m/kg: 1.00
b) Mass of Mg
(i) Calculate the <em>moles of Ti
</em>
n = 1.00 kg Ti × (1 kmol Ti /47.87 kg Ti)
= 0.020 89 kmol Ti
(ii) Calculate the <em>moles of Mg
</em>
The molar ratio is (2 kmol Mg/1 kmol Ti)
n = 0.020 89 kmol Ti × (2 kmol Mg/1 kmol Ti)
= 0.041 78 kmol Mg
(iii) Calculate the <em>mass of Mg
</em>
m = 0.041 78 kmol Mg × (24.30 kg Mg/1 kmol Mg)
= 1.02 kg Mg
You need 1.02 kg Mg to produce 1.00 kg Ti.