Is chromium plus nickel an element, compound, homogeneous or heterogeneous?

How does atomic radius change within groups and across periods in the periodic table

Where inside your body would you find antibodies?

A patient is advised to supplement her diet with 2g of calcium per day. the calcium tablets she purchase contain 500mg of calcium per tablet, how many tablet per day should the patient take?

When a white powder is added to a liquid in a beaker at room temperature, the beaker becomes too hot to touch. What kind of reaction is this an example of? A. a fusion reaction B. a combustion reaction C. an exothermic reaction D.

What element electron configuration 1s2 2s2 2p6 3s2 3p5

2. An automobile tire has a pressure of 210 kPa at 293 K. What will be the tire pressure after driving, if the tire temperature rises to 308 K?

Students measuring the mass of a rock record 6.759 g, 6.786 g, 6.812 g, and 6.779 g. Which other measurement of the block's mass would be most precise? A. 6.702 g B. 6.781 g C. 6.605 g D. 6.858 g

What two elements make up dihydrogen monoxide?

What did scientists observe using the earliest microscopes

Which statement describes the redox reaction that occurs when an object is electroplated? A. It is spontaneous and requires an electric current. B. It is spontaneous and produces an electric current. C.