Among the following, what has a molecular mass of 44 u?
CO2
Add the atomic masses in each formula: N2 = 2 × 14 = 28 u, H2O = (2 × 1) + 16 = 18 u, NH3 = 14 + (3 × 1) = 17 u.
For carbon dioxide, CO2 = 12 + (2 × 16) = 12 + 32 = 44 u, which is the value asked for.
Hence, the answer is CO2.
Similar Questions
Which of the following mixtures is NOT homogeneous?
Who was the first scientist to use the term 'element'?
Match the compound to its respective mass ratio by elements from the table given below.
Compound Mass Ratio by Elements 1. Water (H2O) A. 1 : 8 2. Carbon dioxide (CO2) B. 14 : 3 3. Ammonia (NH3) C. 3 : 8 4. Sulphur dioxide (SO2) D. 1 : 1 If hydrochloric acid (HCl) reacts with sodium hydroxide (NaOH), which ions from each reactant participate in forming water?
Which of the following most accurately represents a heterogeneous mixture?
When 16 g of oxygen is combined with 2 g of hydrogen, 18 g water is formed. This observation is in accordance with:
Methyl orange turns red in:
Why is the reaction flask corked during experiments verifying conservation of mass?
Which of the following is a heterogenous mixture?
Given that the atomic masses of C = 12 u, O = 16 u and H = 1 u, which of the following options correctly represents the molecular masses of CO2 and H2O?
Important Questions from Basic Concepts of Chemistry
- Which law states that a compound always contains the same elements in the same proportion by mass?
- Which of the following is NOT applicable to the Law of Constant Proportion?
- Which of the following best differentiates a mixture from a compound?
- Which of the following is an element?
- Which of the following best defines a heterogeneous mixture?
