What is the first step when measuring out acid

What’s the scientific notation for the number 6,840,000,000

In pea plants, the allele for tallness (t) is dominant to the allele for shortness (t). in the cross between a tall pea plant and a short pea plant shown below, what is the probability that the resulting offspring will be tall? whats the percent

How are the terms group and period used on the periodic table