Which Group 15 element exists as diatomic molecules at STP?

(1) phosphorus (3) bismuth

(2) nitrogen (4) arsenic

Which causes seismic waves A: convection in the mantle B: movements of the plates C: gravity in the mantle D: movements of the core

9. Two twin boys are playing outside on a hot, sunny day. One of the twin boys is wearing a black shirt and the other, a white shirt. The twin in the black shirt feels warmer. Explain why.

Why clouds look white?

At sea level, a kilogram weighs approximately what

Static charges can be applied to neutral objects by friction, induction or conduction. What do all of these methods utilize to create this charge? a. protons b. electrons c. heat energy

A student requires 2.00 L of 0.100 M NH4NO3 from a 1.75 M NH4NO3 stock solution. What is the correct way to get the solution?

Are roots or plant growth making cracks in concrete chemical or mechanical weathering?

In a particular genetic cross, the probability of the offspring having a certain traitis 3/4 Which percentage represents this probability? O 25% O 50% O 75% O 100%

A body cools from 60°C to 50°C in 10 minutes. Find its temperature (in °C) at the end of next 10 minutes

my attic keeps making sound and thombs wat does it mean iam creeped out right now it just happened and the lightbulb was shaking