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nordsb [41]
3 years ago
6

The _____________ is measuring a volume of water in _________________.

Chemistry
1 answer:
ASHA 777 [7]3 years ago
4 0

Answer:

The "graduated cylinder" is measuring a "volume of water" in "milliliters".

Option: D

Explanation:

Measuring of "liquid" in "milliliters" we use "graduated cylinder". This represents the "volume of the water" or the "liquid". The "graduated cylinder" is labelled with the dimensions in the "milliliters". Measuring with "graduated cylinder" is some what difficult because of the "meniscus", this "meniscus" is the "curvature" of the surface of the water in the "graduated cylinder". The only problem is "meniscus" is attached to the edges of the cylinder but not in the middle of the cylinder. While looking at the cylinder the "meniscus" is not straight, hence the person should keep the "graduated cylinder" at his eye level.

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What temperature kelvin would .97mol of gas be to occupy 26L at 751.2mmHg?
crimeas [40]

Answer: 322.56 Kelvin

Explanation:

Use the Ideal Gas Law

PV=nRT

R is the gas constant

T is the temperature in Kelvins

P is the pressure in atmospheres

V is the volume in liters

n is the number of moles of gas

First, the mm of mercury need to be converted to atmospheres using the conversion factor 1atm = 760 torr.

751.2mmHg (torr) =0.988atm

Now plug everything in

(0.988)(26)=(0.97)(0.0821)T\\T=322.56K

5 0
3 years ago
An element's atomic number is 78. How many protons would an atom of this element have?
Oksanka [162]

Answer:

78

Explanation:

atomic number is number of protons

6 0
3 years ago
Which elements are gases at STP?
Gwar [14]

Answer:

hydrogen (H), nitogen (N), oxygen (O), fluorine (F), chlorine (Cl), helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn)

Explanation: found this online, it's best to remember them.

7 0
3 years ago
The gram formula mass of a compound is 48 grams. The mass of 1.0 moles of this compound is
ehidna [41]
The gram formula mass is Molar mass. The mass of 1.0 moles is : 
3) 48.0 g
3 0
4 years ago
From the illustration of the potassium atom fill in the periodic table selection
Phoenix [80]

Answer:

2 electrons

8 electrons

8 electrons

1 electron (just count in the rings for these ones)

19 protons (it says "P=19" in the middle. The P stands for Protons)

K (it's from Latin medieval Latin "kalium")

39 (add proton and neutron amounts to get the approximate atomic mass--electrons are negligible)

Explanation:

6 0
3 years ago
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