A student has a balloon with a volume of 2.5 liters at a temperature of 20°C. As the day warms up to 40°C the student notices their balloon changing size. What is the
new volume of the student's balloon?

What element breaks down into yttrium-90?

Bohr's model could only explain the spectra of which type of atoms? single atoms with one electron single atoms with more than one electron bonded atoms with one electron bonded atoms with more than one electron

Is this a single replacement reaction or there is no