Module 2 Lesson 1 Assignment Attempt review VVS

Question 2 of 22 This question is designed to ensure that you are using your calculator correctly. Use a calculator to do these calculations. Keep at least two significant figures in your answers. 1.6 x 104 %D 8.6 x 10-2 TOOLS x10

You are given four values (1.033, 4.157, 1.05, and 4.6) and asked to conduct calculations on them. You perform a series of mathematical operations using the values and make a table that includes the calculated value as displayed on your calculator: Mathematical operation Value displayed by calculator 1.033 +4.157 +1.05+4.6 10.8400 1.033 x 1.05 1.08465 4.157 - 1.05 3.10700 4.157/31.0341 0.133949 4.6/31.0341 0.148224 Round each of the values displayed by the calculator to the correct number of significant figures, and place the value in the bin that correctly indicates the number of significant digits you rounded to. Drag the appropriate items to their respective bins. » View Available Hint(s) Reset Help 10.8400 1.08465 3.10700 0.133949 0.148224 1 significant figure 2 significant figures 3 significant figures 4 significant figures

A ______________________is the physical combining of two or more substances (not necessarily elements). The composition may vary, the substances retain their properties, and they may be separated by physical means.   Is it a compound or mixture?

Find the weighted average of these values. Value Weight 5.00 75.0% 6.00 15.0% 7.00 10.0% weighted average:

Consider the following operations on the number 8.83 x 10-². Without using a calculator, decide which would give a significantly smaller value than 8.83 x 10-2, which would give a significantly larger value, or which would give essentially the same value. 8.83 x 10-2 +3.23 x 105 (same 8.83 x 10-2-3.23 x 105 smaller 8.83 x 10 2 x 3.23 x 105 larger v 8.83 x 10-2/3.23 x 105 smaller

What is the mass of 1.91 x 10^23 atoms of nitrogen? ____ grams What is the mass of 3.91 x 10^23 molecules of nitrogen? ____ grams What is the mass of 1.10 x 10^24 atoms of oxygen? ____ grams What is the mass of 9.26 x 10^23 molecules of oxygen?  _____grams     PLEASE ANSWER ALL THE QUESTIONS ITS ACTUALLY ALL IN ONE SINGLE QUESTION, THANK YOU!

Find the weighted average of these values. Weighted average Value Weight 3.00 75.0% Number 4.00 15.0% 5.00 10.0%

A human hair is 75 um across. How many inches is this? STARTING AMOUNT ADD FACTOR ANSWER RESET *( ) %D 0.01 100 10 1 1x 10° 1 x 10-6 0.1 2.54 1 x 106 0.33 0.001 0.003 3.0 1 x 10-9 75 1000 0.00003 in mm cm um 30

A chemist measures the amount of chlorine gas produced during an experiment. She finds that 59.1 g of chlorine gas is produced. Calculate the number of moles of chlorine gas produced. Be sure your answer has the correct number of significant digits. olo O mol 18 Ar x10

The ionic radius of a sodium ion is 2.27 angstroms (A). What is this length in um 1010 2.27 X 2.27 x 10 pm STARTING AMOUNT 1 101° m 2.27 Å x = 2.27 × 10* µm 1A ADD FACTOR DELETE ANSWER RESET *( ) 2.27 0.0227 10° 2.27 x 1010 1 106 1010 1010 104 104 10 10 2.27 x 104 2.27 x 10* um A cm

Question 10 (1 point) v Saved A student poured 4.6 mL of water into a test tube. She marked the level of the water on the test tube and poured it out. Using a dropper, she filled the test tube to the marked level drop by drop. She used 66 drops of water. How many drops of water would be in 1 mL? O14.3478 drops/mL Can't tell from the information given. 50°F Type here to search