An atom has 5 protons, 6 neutrons, and 5 electrons. What is the charge of the atom's nucleus?
-6
-5
+6
+5
I’m literally so confused I thought the charge would be -1 but that’s not even a answer

The pressure inside a hydrogen-filled container was 2.10 atm at 21 ? c. what would the pressure be if the container was heated to 92 ? c ?

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?