![subject](/tpl/images/cats/himiya.png)
Chemistry, 13.12.2019 21:31 ashleyvalles16
Agroup of students wants to observe the reaction between magnesium metal and hydrochloric acid. they place a 1.2-g strip of the metal into a test tube containing 4.7 g of aqueous hydrochloric acid. the students observe bubbles forming on the surface of the metal, and the solution turns white. after all of the metal disappears, they use a triple-beam balance to determine the mass of the products. the resulting mass is less than the mass of the reactants, which leads them to believe they did something incorrectly during their experiment. examine the equation below, then determine which of the following steps the students could have taken to prove that mass was conserved during the reaction. mg(s) + hcl(aq) ⇒ h2(g) + mgcl2(aq) a the students could recalibrate the triple-beam balance before finding the mass of the solution again. b the students could hold a glowing splint over the top of the test tube to check for the presence of hydrogen gas. c the students could have collected the hydrogen gas formed during the reaction, found its mass, and added that amount to the mass of the solution. d the students could boil the solution that formed to remove excess water, weigh the solid magnesium chloride, then compare that mass to the mass of the reactants.
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Other questions on the subject: Chemistry
![image](/tpl/images/cats/himiya.png)
Chemistry, 21.06.2019 20:30, mayamabjishovrvq9
1. calculate the approximate enthalpy of the reaction in joules. estimate that 1.0 ml of vinegar has the same thermal mass as 1.0 ml of water. iqnore the thermal mass of th sodium bicarbonate. note: it takes about 4.2 joules () to change 1.0 gram (1.0ml) of water 1.0 c
Answers: 2
![image](/tpl/images/cats/himiya.png)
![image](/tpl/images/cats/himiya.png)
![image](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 18:30, rosie20052019
You open a can of soda at room temperature and hear a hiss. which of the following factors has changed inside the container? a.) atmospheric pressure b.) temperature of gas c.) type of gas d.) amount of gas
Answers: 1
You know the right answer?
Agroup of students wants to observe the reaction between magnesium metal and hydrochloric acid. they...
Questions in other subjects:
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 11.09.2019 20:30
![Konu](/tpl/images/cats/es.png)
Spanish, 11.09.2019 20:30
![Konu](/tpl/images/cats/istoriya.png)
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 11.09.2019 20:30
![Konu](/tpl/images/cats/istoriya.png)
History, 11.09.2019 20:30
![Konu](/tpl/images/cats/biologiya.png)
Biology, 11.09.2019 20:30
![Konu](/tpl/images/cats/biologiya.png)
![Konu](/tpl/images/cats/en.png)
English, 11.09.2019 20:30