![subject](/tpl/images/cats/himiya.png)
Chemistry, 28.09.2020 15:01 noreenhussain
Which statement correctly describes a characteristic that a scientific
measuring tool should have?
A. To be precise, it must be able to make measurements repeatedly
over a long period of time.
B. To be precise, it must be able to make measurements with small
units.
C. To be precise, it must be able to make measurements that are
close to the actual value.
D. To be precise, it must be able to make measurements with both
large and small units.
![ansver](/tpl/images/cats/User.png)
Answers: 1
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 11:40
Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 12:50
What is the chemical name of the compound na2co3? use the list of polyatomic ions and the periodic table to you answer. a. sodium carbon oxide b. sodium carbonate c. sodium(ll) carbonate d. sodium oxalate
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 18:00
Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?
Answers: 2
![question](/tpl/images/cats/himiya.png)
You know the right answer?
Which statement correctly describes a characteristic that a scientific
measuring tool should have?<...
Questions
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mkx.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 25.03.2021 21:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 25.03.2021 21:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 25.03.2021 21:40
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 25.03.2021 21:40
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 25.03.2021 21:40
![question](/tpl/images/cats/mat.png)
Mathematics, 25.03.2021 21:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 25.03.2021 21:40
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 25.03.2021 21:40
![question](/tpl/images/cats/mat.png)
Mathematics, 25.03.2021 21:40