Answer:
Adenine forms two hydrogen bonds with thymine;
guanine forms three hydrogen bonds with cytosine
Explanation:
There are three hydrogen bonds between guanine and cytosine. Between adenine and thymine, two hydrogen bonds form. Complementary pairs always include one base of purine and one base of pyrimidine.
Answer:
96.66 g of Fe₃O₄
Explanation:
In order to calculate the weight of Fe₃O₄ in 100.0 g of Fe₂O₃ we need elements in common between both substances, for instance, the mass of Fe in each one. We will use the molar mass of Fe = 55.84g/mol The conversion factors we need are:
- 159.69 g of Fe₂O₃ contain 2 × 55.84 = 111.68 g of Fe
- 231.54 g of Fe₃O₄ contain 3 × 55.84 = 167.52 g of Fe
Then, we can use proportions:
2 <span>Al(NO</span>₃<span>)</span>₃ + 3 <span>Na</span>₂<span>SO</span>₄ = <span>Al</span>₂<span>(SO</span>₄<span>)</span>₃ + 6 <span>NaNO</span>₃<span>
</span>Aluminium Nitrate + Salt Cake = Aluminium Sulfate + Sodium Nitrate
Answer D ( double replacement )
hope this helps!
Hope this helps!
Answer: The correct option is: "A state agency has been created to monitor the production and distribution of sports drinks."
Explanation:
The economic regulation are the provisions through which the government intervenes in the markets to set prices or quantities of production, or establish technical specifications and in general, restrictions that must be met by citizens and companies to participate in a market.
