A 0.62g sample of sodium hydroxide and sodium carbonate and inert material was dissolved and required 30.00cm^3 of HCl to reach the phenolphthalein end point. Methyl orange point was added and 6.50cm^3 more HCl was required to reach the methyl orange point, if the HCl was 0.24M, calculate the percentage of sodium hydroxide and sodium carbonate in the sample.

Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what  most likelyhappened? energy was created inside the blocks.energy was destroyed inside the blocks.energy was absorbed into the blocks from outside the system.energy was transferred from the warmer block to the cooler block.

What is the atomic number of an atom that has 6 protons

He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98