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musickatia [10]
3 years ago
7

How many grams are in 2.3 x 10-4 moles of calcium phosphate, Ca3(PO3)2?

Chemistry
1 answer:
scZoUnD [109]3 years ago
5 0

Answer:

7136900g or 7136 kg

 

Explanation:

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A balloon is filled with 35L of helium in the morning when the temperature is 20C. By noon the temperature has risen to 45C. Wha
neonofarm [45]

Answer: 38L

Explanation:

Initial volume of helium V1 = 35 L

Initial temperature T1 = 20°C

Convert temperature in Celsius to Kelvin

(20°C + 273 = 293K)

New volume V2 = ?

New Temperature T2 = 45°C

(45°C + 273 = 318K)

Since, volume and temperature are involved while pressure is constant, apply the formula for Charles' Law:

(V1/T1) = (V2/T2)

35L/293K = V2/318K

0.119 = V2/318K

To get V2, cross multiply

V2 = 0.119 x 318

V2 = 38L

Thus, the new volume of the balloon is 38 liters

8 0
3 years ago
Which of the following molecules may diffuse freely through a phospholipid bilayer? (select two answers) asparagine, an amino ac
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Answer:

testosterone, a steroid hormone

molecular oxygen (O₂)

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Phospholipid Bi layer is permeable to some molecules and it will allow them to pass through it freely. Molecules which are soluble in water (polar molecules or hydrophillic molecules) are less permeable through phospholipid Bi layer . In given options Molecular Oxygen and Testosterone( steroid Hormone) are permeable through the layer because of its lipid solubility and size of the molecule .

3 0
3 years ago
Make the following conversion. 0.075 m = _____ cm 7.5 75 0.0075 0.00075
GaryK [48]
In the given question we need to convert 0.075 meter into centimeter. For this purpose we need to know the relation between meter and centimeter. Then only this problem can be solved and the correct answer reached.
Now we know that
1 meter = 100 centimeter
Then
0.075 meter = [(100/1) * 0.075] centimeter
We know that any number when divided by 1 gives the same number.
So
0.075 meter = (100 * 0.075) centimeter
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                    = (7500/1000) centimeter
                    = (75/10) centimeter
                    = 7.5 centimeter.
So from all the given options the correct answer to the question is 7.5 centimeter.  
8 0
3 years ago
Everything to know about on acids and alkalines plz help me !!!
belka [17]
Acids are acids and alkalines are alkalines.
4 0
3 years ago
What is an Isolated Atom?​
sashaice [31]

Isolated atom basically means atom which exists separatly without any bonding with other atoms. It can only be acheived experimentaly because normally all atoms are bonded together by strong nuclear forces and its really hard to isolate a single atom.

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3 years ago
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