Answer:
The Sun looks bigger than other stars because its more closer to the earth than the stars.the farther anything is distant from us the tinier it will look
Explanation:
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20 grams of borax contains (20.0g) / (201 g mol -1) =0.10 mol of borax.
Therefore 0.40 mol of borax
Answer:
B.
He could breed his peach plants with peach plants that can survive the frost.
Explanation:
Tom can best solve his problem by breeding his peach plants with the ones that can survive the frost.
- This is known cross breeding
- The goal of cross breeding is to produce offspring that contains the traits of both of the parents or an improved hybrid.
- If Tom can cross breed the failing peaches with the successful winter resistant ones, he can ensure better production.
- The new hybrid will therefore will be genetically superior and adapted to the prevailing environmental changes.
9)
balanced equation: CuSO₄ + Zn(s) ---> ZnSO₄ + Cu(s)
reaction type: single replacement
10)
balanced equation: H₂O₂ ----> H₂O + O₂ catalyst MnO2 under the arrow.
reaction type: decomposition
4.3 x 10⁻⁸dm⁻²
Explanation:
Problem:
To solve this problem, we have apply the right rule of indices operation.
If we have an indices in the form;
= (
)
Solving this problem:
= 
x 10
)
= 0.43 x 10⁻⁷
= 4.3 x 10⁻¹ x 10⁻⁷
= 4.3 x 10⁻⁸
for the units:
= 
The solution is: 4.3 x 10⁻⁸dm⁻²
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