Un acuario debe mantener la concentración de sal similar a la del agua de mar, esto es, 1.8 gramos de sal disueltos en 50 gramos de agua. ¿Cuál es el porcentaje en masa de la sal en la disolución?

Which of the following pressures is equal to 760 mm hg? 2.0 atm 101.3 pa 101,300 kpa 101,300 pa

Calculate the estimated density of each ball. use the formula d = m/v where d is the density, m is the mass, and v is the volume. record your calculations in table a of your student guide. given that the density of water is 1.0 g/cm3, make a prediction about whether each ball will float in water. record your prediction in table a. what is the estimated density of the table tennis ball? record your answer to the nearest hundredth

Measurements that have similar values are: a. usually accurate b. sometimes accurate c. always accurate d. never accurate