[ HELP ] CHEMISTRY MCQs

[screamingskull]

so is that the only test for it n it wont turn positive for any other test?????

No since limewater absorbs CO2 it turns milky due to that.

 

[sidbloom]

No since limewater absorbs CO2 it turns milky due to that.

i mean for CO2H

 

[sidbloom]

A small Dua before attempting the Paper for all O and A levelz
Read 3 time's durood -e -pak
Read 4 time's surah Fatihah
Read 3 time's Surah Iklas
And Pray To allah
Ya! Allah tamam Studnts ko ache marks se pass krde or jin ke paper ho rhy jen or hone wale hai un ke paper ache se ho jaye or jus ne mujhe ye dua send ki hai us ko bhi kamyabi ata kar and ham sab ko apni Panah me lay leh (ameen).....

 

[zainab1661]

Use of the Data Booklet is relevant to this question.
When a sports medal with a total surface area of 150 cm2 was evenly coated with silver, using
electrolysis, its mass increased by 0.216 g.
How many atoms of silver were deposited per cm2 on the surface of the medal?

A 8.0 × 1018
B 1.8 × 1019
C 1.2 × 1021
D 4.1 × 1022

Can someone tell me how to do this quicklyyy

 

[wajji345]

No since limewater absorbs CO2 it turns milky due to that.

i was talking about A'levels

 

[screamingskull]

i was talking about A'levels

I don't know about the A levels course :|