I think your answer would be an Atom because it is referred to as the smallest unit of matter that retains the chemical properties of an element.
I Hope my answer help you :)
1.8x10^20 atoms x (1 mole / 6.022x10^23 atoms) = 3.0x10^-4 mole
ANSWER: B. 20 grams since no matter was added or removed
Hope it helps!
Answer:
What are the correct coefficients when this chemical equation is
balanced? *
P4 + 02 P2O5
<h2>1, 5, 2</h2>
Explanation:
For this reaction we have a combination reaction. Balancing Strategies: This combination reaction is a lot easier to balance and if you can get an even number of oxygen atoms on the reactants side of the equation.
Answer:
It is impposible to know
Explanation:
If you consider next equation, Q=mCpdT, where Q= heat flow, m= mass of aluminium block, Cp= specific heat of aluminium and dT is the difference between T2 (?) and T1 (25°C) you need more information to respond this question, as the ammount of alcohol vaporized and the mass of the aluminium block.
It is impossible to know what is the final temperature of the aluminium block because you don´t know what is its mass. Greater the mass, lower the temparature variation is. In the other hand, greater the mass of alcohol, greater the head flow, so greater the the change in temperature.
