Chemistry, 04.01.2021 20:40 stinematesa
For thousands of years, scientists didn’t know cells existed. What major invention helped open their eyes to the world of cells?
The invention of the wheel allowed for faster travel allowing scientists to meet to discuss new ideas.
The invention of the telegraph allowed for faster communication between scientists.
The invention of the microscope allowed scientists to see smaller things in greater detail.
The invention of the telescope gave scientists an opportunity to magnify larger things in greater detail.
Answers: 2
Chemistry, 22.06.2019 12:30
Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)
Answers: 1
Chemistry, 23.06.2019 00:30
When a beta particle is emitted, the mass number of the nucleus a. decreases by one b. increases by one c. remains the same d. decreases by two
Answers: 2
Chemistry, 23.06.2019 04:20
The equation below shows the reaction of zinc with hydrochloric acid (hcl). zn (s) + 2 hcl (aq) —> zncl2 (aq) + h2 (g) what will happen if the concentration of hcl is decreased? a. more zncl2 will be produced. b. the reaction rate will slow down. c. the hydrochloric acid will become more acidic. d. the reaction will produce water instead of hydrogen gas.
Answers: 1
For thousands of years, scientists didn’t know cells existed. What major invention helped open their...
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