Answer is: copper production have been rising since 1900.
At beginning of 20th century average production of copper was half million tons per year, in 1940s two million tons per year, in 1960s four million tons per year, in 1980 eight million tons, in 2000 fourteen million tons.Copper is important industrial metals because his iheat and electrical conductivitie. Because <span>Indian and Chinese economies are growing since 2006, price of copper rises.</span>
It’s D,the cold will bring cooler temperatures.....:)
Answer:
a. 599 cm³
b. 1.49 g/cm³
Explanation:
<h3>A. Volume </h3>
Volume is the amount of space an object occupies. Since this is a brick, the object is a rectangular prism. The formula for the volume of a rectangular prism is the product of length, width, and height.
The brick's length (l) is 13.77 centimeters, the width (w) is 8.50 centimeters, and the height (h) is 5.12 centimeters. Substitute these values into the formula.
Multiply the numbers together.
The original measurements have at least 3 significant figures, so our answer must have 3. For the number we calculated, that is the ones place. The 2 in the tenths place tells us to leave the 9 in the ones place.
<h3>2. Density </h3>
Density is the amount of matter in a specified space. The formula for density is mass over volume.
The mass of the brick is 895.3 grams and we just found the volume to be 599.2704 cubic centimeters. Substitute the values into the formula.
Divide.
Round to three significant figures. For the number we calculated, that is the hundredth place. The 4 in the thousandth place tells us to leave the 9 in the hundredth place.
The answer is B. bases measure below seven
think of it like this 7 is neutral going down from seven it rises in acidity and going up from seven increases in alkalinity