Answer:
3.4g of Al
Explanation:
you would need to start with 3.4 g of Al
Answer: Because Alkalis are bases that can dissolve in water, which can also neutralize acid.
Answer:
90.35 × 10²³ atoms
Solution:
1 molecules of H20 contains 3 atoms,.
And we know that one mole of any molecule contains 6.023 × 10²³ atoms from Avogadro's number,
hence 5 moles of H20 will contain = 5× 6.023 × 10²³ × 3 atoms = 90.35 × 10²³ atoms!
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Answer:
300 g
Explanation:
To solve this convert atoms to moles to grams. To convert atoms to moles, you will need Avogadro's number (6.022*10²³ atoms/mol), and to convert moles to grams, you will need the atomic mass of Cl (34.45 g/mol).
Divide the given mass of Cl by Avogadro's number to find moles. Get 8.718..
Multiply the moles by the atomic mass. Get 300.3..
Your answer is 300 g because of significant figures.
Answer: Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color change, formation of a precipitate, formation of a gas, odor change, temperature change
Explanation:
