5. A computer chip contains 1.20 x 10^23 atoms of silicon. What is its mass?

(The molecular mass of silicon is 28 g/mol.)

5.6 grams

06.02 x 10^23 grams

O 14 grams

O 2 grams

2. Which expression is equivalent to the expression shown below? 20 + 8y - 9y - 21 Select each correct answer. 2 (10 + 4y - 7y - 19) 2 (10 + 4y) - 3 (3y - 7) 4 (5 + 2y - 5y - 17) 4 (5 + 2y) - 3 (3y + 7) - (y + 1) - (1 - y) y - 1

What is absolute value of 4?

Explain how adding - 3/10 + 4/10 is like adding 3+4

Pedro was simplifying four over seven divided by five over eight. and his work is shown below. Identify where he made his error. Original problem: four over seven divided by five over eight. Step 1: four over seven multiplied by eight over five.

Is 4 pounds 2 ounces (greater, lesser, or equal to 70 ounces

Simplify - 6+[4 - (*-2) ]

22.4 cm 18.1 cm 28 cm What's the volume of the triangular prism

Find the area of a square with a diagonal of 8 cm. 16 cm2 12 cm2 18 cm2 32 cm2

What is the answer for this? y = 2 (x - 2) ² - 2

Jeff is thinking of a 5 digit numbers. rick is thinking of a 6 digit numbers. whose number is greater how do you know