A model of (CH20)4 was created using colored beads. Carbon atoms were represented by black beads, hydrogen atoms by red beads, and oxygen atoms by blue beads. Which of the following combinations of beads shows an accurate model of (CH20)4? A 4 black, 8 red, and 4 blue.
B 1 black, 2 red, and 1 blue.
C 4 black, 6 red, and 4 blue.
D 1 black, 8 red, and 1 blue

This is important. 1. which of the following is an si base unit for measuring length? (2 points) inch gram meter mole 2. which of the following units for distance is an si unit? (2 points) centimeter foot inch yard 3. which of the following tools should a scientist use to measure an object in meters? (2 points) electronic balance pan balance tape measure thermometer

The mass of the sun is 1.99×1030kg and its distance to the earth is 1.50×1011m. what is the gravitational force of the sun on the earth?

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration