Which elements in the periodic table are metalloids or have semimetallic properties?

A) N and Br

B) As only

C) Br only

Determine the number of atoms in 1.85 ml of mercury. (the density of mercury is 13.5 g/ml.)

What are the properties of black holes

If a Slinky® is spread out in a straight line along the ground, giving the Slinky® a push or pulse will create a disturbance in the opposite direction of the wave motion. perpendicular to the wave motion. in a circle. parallel to the wave motion.

0.15 grams of Mg is combined with HCl to produce H2 gas. If the reaction occurs at 25°C in a 150 ml container, what is the theoretical pressure change? A. 1.01 kPa B. 102 atm C. 102 kPa

On equipped models, what can Over-the-Air Updates Capability do? Notify customers when they need to contact the Dealership to make system updates Create a Wi-Fi hotspot for streaming videos and more Use a wireless connection to perform updates over

There is a large increase in ionization energy between the second and the third ionization energies of a metal. What kind of ion is the metal likely to form? Include the charge in your answer.

Which of the following are true statements about equilibrium systems? For the following reaction at equilibrium: CaCO3 (s) ⇌ CaO (s) + CO2 (g) adding more CaCO3 will shift the equilibrium to the right.

How many sulfide ions are present in 23.5g of Sb2S3

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