The chemical equation describing the burning of hydrogen gas is: 2H2 + O2 ---> 2H2O. Why is this both a synthesis and a combustion reaction?

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided

Answer asap need by wednesday morning calculate the ph of 0.036m naoh best answer will be brainliest

An unknown substance has been shown to have weak covalent bonds. which of the following is most likely a property of this substance? a. high ph b. high conductivity c. low melting point d. low flammability