Calculate the mass of naco4 to be weighed to prepare 250cm of 1m solution

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

Imagine if during the cathode ray experiment, the size of the particles of the ray was the same as the size of the atom forming the cathode. which other model or scientific observation would have also been supported? 1. this would support dalton's postulates that proposed the atoms are indivisible because no small particles are involved. 2. this would support bohr's prediction about electrons moving in orbits having specific energy. 3. this would support bohr's prediction about electrons being randomly scattered around the nucleus in the atom. 4. this would support dalton's postulates that proposed that atoms combine in fixed whole number ratios to form compounds.

What are the names of these two interactions with cattle and how do they differ from each other