Question 48

The total mass of the beaker and solution after the salt is dissolved is exactly 554 g.

When 4 g of salt is added to the original mass of the beaker filled with water (550 g), the total mass becomes 550 g + 4 g, resulting in exactly 554 g.

A) More than 554 g

This option is incorrect because adding 4 g of salt to the initial mass of 550 g does not exceed 554 g. The mass remains exactly 554 g after the salt is dissolved.

B) Exactly 554 g

This option is correct as it accurately reflects the sum of the initial mass of the beaker and water (550 g) and the mass of the dissolved salt (4 g). Therefore, the total mass is indeed 554 g.

C) Less than 550 g

This option is incorrect because the mass cannot decrease when salt is added to the water. The addition of salt increases the total mass, making it impossible for the total to be less than 550 g.

D) Between 550 g and 554 g

This option is also incorrect because it implies a total mass that is less than 554 g after the addition of salt. Since the total mass is exactly 554 g, it cannot fall in this range.

Conclusion

The correct option is B because the total mass of the beaker and solution after adding the salt is precisely 554 g. All other options fail to accurately represent the total mass after the addition of the salt, either overestimating or underestimating the correct value.