Which describes the temperature changes that would be observed as ice at −15 degrees celsius is changed to water at zero degrees celsius? steady increase in temperature from −15°c to 0°c with gradual change from ice to water gradual increase in temperature of ice from −15°c to 0°c, holding at 0°c as ice melts to water steady decrease in temperature from water at 0°c to ice at −15°c holding at −15°c as ice melts to liquid water and then gradual warming of water to 0°c

 gradual increase in temperature of ice from −15°C to 0°C, holding at 0°C as ice melts to water

Explanation: The heat used to convert solid to liquid is gained by molecules to gain kinetic energy and thus the molecules start moving faster and the temperature increases.

But as the melting point is approached i.e. , the temperature remains constant as now the heat given is used to break the inter molecular forces and thus is not reflected in terms of temperature increase. This hidden heat is called as latent heat.

The temperature remains constant till the phase change is complete.

why is cellular respiration important for homeostasis?

it changes food into energy that the organism can use.

which of the following is most likely to happen if a cell is not able to divide?

the cell will not be replaced when it is damaged.

explanation:

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.