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Maslowich
3 years ago
8

A chemistry instructor provides each student with 8 test tubes at the beginning of the year. If there are 28 students per class,

how many test tubes are required for three chemistry classes?
Chemistry
1 answer:
Ann [662]3 years ago
7 0
Answer :8*28=224
224*3=672
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5. If an atom has 35 protons in the nucleus, how many electrons will it have orbiting the
Aleks04 [339]

Answer:

35

Explanation:

An atom is neutral, meaning that the number of protons is equal to the number of electrons.

4 0
3 years ago
Classify each organic compound based on the functional group it contains.
bixtya [17]

Answer:

H2C2O1

Explanation:

8 0
2 years ago
What is the pressure of a gas that began at 38 torr, and 500L and is changed to occupy a volume of 677 L?
qwelly [4]

Answer:

P₂ = 28.5 torr

Explanation:

Given data:

Initial pressure = 38 torr

Initial volume = 500 L

Final volume = 677 L

Final pressure = ?

Solution:

P₁V₁ = P₂V₂

P₁ = Initial pressure

V₁ = Initial volume

P₂ = Final pressure

V₂ = Final volume

Now we will put the vales in formula.

P₁V₁ = P₂V₂

P₂ = P₁V₁ /V₂

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P₂ = 28.5 torr

6 0
3 years ago
Give the name, atomic symbol, and group number of the element with each Z value, and classify it as a metal, metalloid, or nonme
Viktor [21]

Atomic number = 42

Name = Molybdenum

Atomic symbol  = Mo

Group number = VI(B)6

Mo = Metal

How to find all valves of Z=42?

Here, we are going to find out the name, symbol and group numbers element with the following Z value and their classification as a metal, metalloid, or nonmetal.

The atomic number of the element is 42

Therefore, the name of the element is Molybdenum

The atomic symbol of the element is Mo

The group number of  is VI(B)6

Mo is a metal

Hence, the element is  Molybdenum

Learn more about atomic symbol here :

brainly.com/question/930789

#SPJ4

5 0
1 year ago
Instrument for measuring the basic units​
o-na [289]

Answer: A Ruler

Explanation:A Ruler is a common instrument used for measuring the length of small objects. It usually has four units of measurement to choose from: millimeter, centimeter, inch, and foot.

4 0
3 years ago
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