How are the helium atoms in this model different from real helium atoms?

A scientist wants to display the proportion of 250 geese that were male compared to the proportion that were female. What type of visual display should the scientist use

Why were they put into water before we tested them?

What kind of energy is required for a chemical reaction?

6. What is the density of an irregular shaped object that displaces 15 mL of water and has a mass of 12 grams? Would this object float or sink if placed in water? Explain.

Be sure to answer all parts. methanol, a major industrial feedstock, is made by several catalyzed reactions, such as co (g) + 2h2 (g) → ch3oh (l) one concern about using ch3oh as an auto fuel is its oxidation in air to yield formaldehyde, ch2o (g),

A cup can hold 50 ml of water and has a mass of 25g. If each penny weighs 2g, how many pennies can it hold before it sinks in fresh water? Explain how you got your answer.

How many moles of FeO are produced if 8 moles of CuFeS, are consumed?

Will mark as Brainliest. How much energy is released when 16.5 g of steam is condensed at 100 degrees Celsius? -37290 J -3729 J -136 J -136 kJ

What is the mole fraction, x, of solute and the molality for an aqueous solution that is 16.0 % NaOH by mass

What is the square root of 54554? What is the square root of 35654?