The answer is the letter c
Answer:
8.90 x 10^-3
Explanation:
8.90 x 10^-3
It has to be 10^-3 (ten to the negative three) because when you move the decimal back to it's proper place you are moving it to the left.
and it has to be 8.90 because you have to observe correct sig figs. The 0 at the end of the number is significant because it is at the end of the number AND to the right of the decimal point.
The washing up liquid turns blue because pH of liquid is greater than 7.
<h3>What is pH?</h3>
pH is a measures how much water is acidic/basic in nature. The range o pH is 0 - 14. The pH value of 7 represents neutral. pH less than 7 is acidic nature. pH greater than 7 shows a base.
Sharna mixed cabbage water with colourless washing up liquid, the mixture turned blue.
Cabbage contains anthocyanin which changes color when it is mixed with an acid or a base. The pigment turns bluish-green in a pH greater than 7.
Thus, The washing up liquid turns blue because pH of liquid is greater than 7.
Learn more about pH.
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