What mass of Na(OH) is needed to prepare a 0.343M solution dissolved
in 2500 mL of water?

List four observations that indicate that a chemical reaction may be taking place

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

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?