A student described two properties of a substance as shown. Properties of Substance Property Description C A known mass of the substance gives off heat when it is burned. D A substance can be stretched out to become a long wire. Which of the following is true about the two properties described in the table? (5 points) Both are physical properties. Both are chemical properties. C is a chemical property and D is a physical property. C is a physical property and D is a chemical property.

Acompound contains c, h, and o atoms. when 1.130 g of the compound is burned in oxygen, 1.064 g co2 and 0.3631 g h2o are produced. what is the empirical formula of this compound?

Asolution contains 180 g of glucose (c6h12o6) and 162 g of water. what is the mole fraction of glucose?

Select the correct answer from each drop-down menu.describe what happens to a carbon-11 atom when it undergoes positron emission.the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons