Answer:

Explanation:
Density is found by dividing the mass by the volume.

The mass of the object is 11 grams and the volume is 13 milliliters.

Substitute the values into the formula.

Divide.

Round to the nearest hundredth. The 6 in the thousandth place tells us to round the 4 to a 5.

The density is about <u>0.85 grams per milliliter.</u>
Answer:
B.brief in water vapor, fixed in liquid water, and nonexistent in ice crystals.
Explanation:
Water's States: Gas, Liquid, and Solid
In liquid water, hydrogen bonds are constantly formed and broken as the water molecules slide past each other. The breaking of these bonds is caused by the motion (kinetic energy) of the water molecules due to the heat contained in the system.
Hope It Helps You
Answer:Percent error= 90.9%
Explanation:
Percent error or percentage error is defined as the percentage of the difference between a measured value usually from an experiment and an exact value in comparison to the exact number.
its formula is thus
Percent error = experimental value - exact or actual value /exact value x 100
=(18.9 - 9.9 /9.9 ) x 100= 9/9.9) x 100
0.909 x 100 = 90.90 = 90.9%
Just divide 2.50*10^25 by 6.02×10^23 to get to moles