Answer:
Cells reproduce for repairing tissues and the growth and development of an organism. Cell division is necessary for any organism to grow and, once fully developed, to maintain healthy tissues. Mitosis occurs in a fully formed organism to repair damaged tissue and to replace old cells.
Answer:
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Explanation:
Geraldo polizzi hooray cc I'm at DDT mlm
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Answer:
Explanation:
Probability of one ²H is 0.00015 = 1.5× 10⁻⁴
Probability of two ²H is 1.5× 10⁻⁴ × 1.5 × 10⁻⁴ = 2.25 × 10⁻⁸
Probability of two ²H plus one ¹⁸O is 2.25 × 10⁻⁸ × 0.0020
= 4.5× 10⁻¹¹
Molecules in 1.0 mol water = 1.0 × 6.022 × 10²³ × 4.5 × 10¹¹
= 2.7 × 10¹³
There are 2.7 × 10¹³ molecules of ²H₂¹⁸O in 1.0 mol of water.
Answer:
2HClO4 + Ca(OH)2 = Ca(ClO4)2 + 2H2O
Explanation:
Formula for aqueous perchloric acid is; HClO_4 (aq)
Formula for aqueous calcium hydroxide is; Ca(OH)_2 (aq)
Thus chemical equation is;
HClO4 + Ca(OH)2 = Ca(ClO4)2 + H2O
We have to balance it and so we now have;
2HClO4 + Ca(OH)2 = Ca(ClO4)2 + 2H2O
Na, Ba, Cs and Ni are metals.