Question

11 formula 0.5 points what is 146 g to mg? answer 12 fill in the blank 0.5 points round 2.793548296×10^24 molecules to 3 significant figures. type your answer... × 10 type your answer... molecules 13 fill in the blank 0.5 points round 0.3026582 moles to 2 significant figures. type your answer... moles

Explanation:

Step1: Use conversion factor

1 g = 1000 mg, so 146 g×1000 = 146000 mg

Step2: Round to 3 sig - figs

For 2.793548296×10²⁴, look at 4th digit. Since 3 < 5, it rounds to 2.79×10²⁴

Step3: Round to 2 sig - figs

For 0.3026582, look at 3rd digit. Since 2 < 5, it rounds to 0.30

Answer:

1. 146000 mg
2. 2.79, 24
3. 0.30