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sweet [91]
3 years ago
10

Always carry the microscope with________________-one on the ____________ and one underneath the____________ of the microscope

Chemistry
1 answer:
Ronch [10]3 years ago
5 0

Answer:

Always carry the microscope with two hands. One on the arm and one underneath the base of the microscope.

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What is the pressure in a 5.00 L tank with 49.00 grams of oxygen gas at 350 K? ___atm
ziro4ka [17]

Answer:

The right answer is "8.81 atm".

Explanation:

Given:

V = 5.00 L

Mass = 4900 g

MW = 32 g/mol

T = 350 K

Now,

Number of moles will be:

n = \frac{Mass}{MW}

   =\frac{49.00}{32}

   =1.53125 \ mole

By using the ideal gas equation, we get

⇒ PV=nRT

or,

⇒    P=\frac{nRT}{V}

By substituting the values, we get

           =\frac{1.53125\times 0.0821\times 350}{5.00}

           =\frac{44.1}{5.00}

           =8.81 \ atm  

4 0
3 years ago
A cube measuring 1cm x 1cm x 1cm is full of water, What is the mass of the water in the cube? (Water has a density of 1.0)
Finger [1]

d= m/v

1.0=m/1cm^3

1.0×1cm^3=m

m=1kg/cm^3

5 0
3 years ago
What would photocaption that compares to a water ecosystem
nalin [4]

Answer:

it is B

Explanation:

7 0
3 years ago
Help would be appreciated!
aivan3 [116]
Answer is A) Al4C3 + 3H2O -> CH4 + 4Al(OH)3

One the left side there are 3 carbon atoms, or moles of carbon, and on the write side there is only one. 

In order to solve these problems, count the number of atoms on each side and make sure that for each element, the number of atoms are equal. 

For example, for the last problem, we have 1 zinc atom on each sidde, two hydrogen atoms, and two chlorine atoms. 
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Elements with high atomic numbers tend to have _____. more electrons than protons more electrons than neutrons more neutrons tha
mylen [45]
More neutrons than protons
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4 years ago
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