Chapter 2: Q3P (page 40)

Question: Approximately how many molecules of H₂Oare in one spoonful of water, assuming that the spoon holds about 18 mL?

Short Answer

Expert verified

Answer

The molecules H₂O that are in one spoonful of water is $6.022 \times 10^{23}$ .

Step by step solution

Definition of Concept

Molecules: Compound molecules contain atoms from two or more different elements.Water (H2O), for example, has three atoms: two hydrogen (H) atoms and one oxygen (O) atom.

Find the number of molecules

$C o n s i d e r t h e g i v e n i n f o r m a t i o n : T h e d e n s i t y o f w a t e r i s \frac{g r a m}{m i l i t e r} T h e o f w a t e r i s e q u a l t o 18 g r a m s . S o, t h e g i v e n m a s s i s 18 g r a m s . M o l e c u l a r M a s s o f H_{2} o (16 + 2) \times 1 18 g r a m s / m o l e N u m b e r o f M o l e s \frac{G i v e n m a s s}{M o l e c u l a r m a s s} U s i n g t h i s f o r m u l a t o c a l c u l a t e t h e n u m b e r o f m o l e c u l e s : N u m b e r o f M o l e c u l e s \times A v a g a r d o N u m b e r 1 \times 6.022 \times 10^{23} 6.022 \times 10^{23} T h e r e f o r e, m o l e c u l e s o f H_{2} o t h a t a r e i n o n e s p o o n f u l o f w a t e r i s 6.022 \times 10^{23} .$

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Question: Approximately how many molecules of H₂Oare in one spoonful of water, assuming that the spoon holds about 18 mL?

Short Answer

Step by step solution

Definition of Concept

Find the number of molecules

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Question: Approximately how many molecules of H2Oare in one spoonful of water, assuming that the spoon holds about 18 mL?

Short Answer

Step by step solution

Definition of Concept

Find the number of molecules

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Biology Textbooks

Genetic Information

Cellular Energetics

Reproduction

Cell Communication

Heredity

Biological Molecules

Study anywhere. Anytime. Across all devices.

Question: Approximately how many molecules of H₂Oare in one spoonful of water, assuming that the spoon holds about 18 mL?