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christhegreat1
12.01.2020 •
Chemistry
Hydrogen gas can be prepared in the laboratory by a single-displacement reaction in which solid zinc reacts with hydrochloric acid.how much zinc in grams is required to make 14.4 g of hydrogen gas through this reaction?
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Ответ:
Zn +2 HCl > ZnCl2 + H2
17.0 g H2 * 1 mol H2 / (2 * 1.008 g H2) * (1 mol Zn / 1 mol H2) =
8.432 mol Zn required
8.432 mol Zn * (65.39 g Zn / mol Zn) = 551.4 g Zn
Ответ:
Question 1: estén
Question 2: vaya
Question 3: esperen
Question 4: hagan
Question 5: probemos
Explanation:
Question 1 with 1 blank
Inés desea que sus hijos siempre (estar) sanos. (estén)
Inés desea que sus hijos siempre estén sanos.
Question 2 with 1 blank
Mi madre insiste en que (yo) (ir) al médico. (vaya)
Mi madre insiste en que vaya al médico.
Question 3 with 1 blank
La enfermera ruega a los pacientes que (esperar) su turno. (esperen)
La enfermera ruega a los pacientes que esperen su turno.
Question 4 with 1 blank
El profesor prefiere que sus estudiantes (hacer) prácticas en el hospital. (hagan)
El profesor prefiere que sus estudiantes hagan prácticas en el hospital.
Question 5 with 1 blank
La clínica sugiere que (nosotros) (probar) la medicina alternativa. (probemos)
La clínica sugiere que probemos la medicina alternativa.
Translation:
(1)Ines wants her children to always be healthy.
(2)My mother insists that I go to the doctor.
(3)The nurse asks patients to wait their turn.
(4)The teacher prefers that his students do internships in the hospital.
(5)The clinic suggests that we try alternative medicine.