Is Ba3N2 acidic basic or neutral

Which of the following best describes a person doing science? A. Dominick uses a computer to do his math homework. B. Lindsay measures the sizes of the craters on the Moon. C. Isabel invents a new kind of doorknob. D.

A mineral sample scratches fingernails, pennies, and glass but does not scratch steel as shown below. what is the hardness of the mineral?

Plants need sunlight, water, and minerals from the soil in order to grow and thrive. These factors A. are always abundant, allowing unlimited growth. B. limit the number of plant populations that can grow in an ecosystem. C.

Man's scientific theories are often in correct because his knowledge is

Which type of rock forms as a result of cooling and crystallization? a. igneous b. classic c. metamorphic d. sedimentary

What is the name of the compound that has the formula N2O? a. nitrogen oxide b. dinitrogen oxide c. nitrogen dioxide d. dinitrogen monoxide

10) What does mRNA copy and carry the code to produce? (1pt) a) DNA b) Proteins

How many neutrons are in an atom of molybdenum-96 (Mo-96)

One mole of any gas takes up how much space at stp

A proton moves through a region of space where there is a magnetic field B = (0.45i + 0 38j) T and an electric field E = (3.0 i - 4.2 j) x 10^3 V/m. At a given instant, the proton's velocity is V = (6.0 i + 3.0 j - 5.0 K) x10^3 m/s.