HELPP Figure 2 shows an electronic balance measuring the mass of a beaker before and alter adding liquid into it.
250 cm3
250 cm3
44.48g before
128.98g after
Which of the following best describes the density of the liquid?

Madison lives near the ocean. she’s formed a hypothesis that increased concentrations of salt in the air speeds the corrosion of certain metals. if madison plans to test this hypothesis, she will have to deal with the following variables in her experiment: dependent variable: independent variable: one possible confounding variable: