A gas syringe is filled with 65 cm³ of oxygen. What is this volume in m³?

The mass of one water molecule is about 2.99 x 10-14 ng. Express this in megagrams (Mg).

Calculate the number of moles in a sample containing 9.80 g of theoretical compound J2Q where the molar mass of J is 12.41 g/mol and the molar mass of Q is 21.38 g/mol.

Which of the following statements is/are true? Silver is a metalloid. Copper is a metal. Magnesium is a nonmetal.

Determine if the following statements are True or False.  Formation of water from hydrogen gas and oxygen gas is a chemical change. [1] Chromium melting at 2000 oC is a physical change. [2] Water freezing on a sidewalk during a snowstorm is a chemical change. [3]

Which of the following statement(s) is/are correct A mole of nitrogen gas weighs more than a mole of ammonia (NH3). A mole of nitrogen dioxide gas (NO2) has more atoms than a mole of carbon monoxide (CO). A mole of water has more hydrogen atoms than a mole of methane gas (CH4).

Which of the following statements is/are true? Sulfur is a metal. Gold is a metalloid. Magnesium is a metal.

In order to receive credit for this problem you must   solve it using dimensional analysis  show all your work and   your work must be legible, well organized and easy to follow.  to the correct number of significant figures and units Once you complete the question show it to camera on HONORLOCK then go upload an image to Exam 1 Fall 2025 Free Response Upload.   A sheet of platinum (Pt) has a surface area of 88.0 in2. How many atoms of platinum would be in a single sheet of platinum, if there is 0.0896 g of Pt/cm2?   

Which of the following is/are correct? 40500 has 5 significant figures. 6.730 has 4 significant figures. 3.20 x 10-3 has 2 significant figures.

A sample of 51.7 g of fluorine gas is being studied, how many molecules of fluorine are in the sample?