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Perform the following calculations rounded to the correct number of significant figures or decimal places.   [a1]  93.910 + 7.09 [a2]  68.472

Convert 5.480×104 µg to g.

A graduated cylinder contains 67.8 mL of liquid.  When a 99.212 g metal sample is placed in the cylinder, the volume changes to 89.8 mL.   What is the density the sample?  [a1] What is a possible identify of the metal?  [a2]

Convert 6200. s to ks.

A graduated cylinder contains 78.5 mL of liquid.  When a 143.36 metal sample is placed in the cylinder, the volume changes to 94.5 mL.  What is the density the sample?  [a1] What is a possible identify of the metal?  [a2]

Write each number in scientific notation. [ans1]  79,400 [ans2]  0.005230 [asn3]  80.

For each description decide if it is referring to a chemical property or change or a physical property or change. Then select all the physical properties.

Dementias caused by neurodegenerative disorders include:

Seizures on a neuronal level are the result of:

What are the hallmarks pathological findings of asthma that you would use to diagnose your patient?