CHEMISTRY HIGH SCHOOL

One positive attribute of dietary fat is that it's a good source of A. water.
B. vitamin
c.
C. energy.
D. boron.

Answers

Answer 1
Answer: C. energy. 

One positive attribute of dietary fat is that it's a good source of ENERGY


NOT:
A. water. 
B. vitamin
D. boron.
Answer 2
Answer: One positive attribute of dietary fat is that it's a good source of C. energy.

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What is combined to get calcium chloride​

Answers

Answer:

See below

Explanation:

This is a simple reaction.

Calcium and chlorine molecule are combined to get calcium chloride.

Ca + Cl₂ → CaCl₂

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Hope this helped!

~AH1807
Calcium chloride can be created by neutralising hydrochloric acid with calcium hydroxide.

[05.03]What is the pressure, in mm Hg, of 2.50 moles of an ideal gas if it has a volume of 50.0 liters when the temperature is 27.0° C?84.2 mm Hg 289 mm Hg 617 mm Hg 936 mm Hg

Answers

Assuming ideal gas law applies to the problem, we find the pressure from the given volume, temperature and number of moles. The ideal gas equation is PV=nRT. R is 0.0821 L atm/ mol K. Substituting the data given, P= (2.50 moles)(0.0821 L atm/ mol K)(27+273 K)/(50 L)= 1.2315 atm. This is equivalent to 936 mm Hg. 

Which of the following elements is NOT a transition metal?a. Copper
c. Sodium
b. Chromium
d. Iron

Answers

This answer is Sodium
D. Iron .. im not sure

The mass number of Fe2+ is 56. How many neutrons are there in a single Fe2+ atom?

Answers

The mass of an atom comes from the protons and neutrons that are found in the nucleus. The number of protons is the atomic number of an element. To find the number of neutrons, subtract the atomic number from the mass of an atom. If the mass number of Fe2+ is 56. The atomic number is 26, so 56 – 26 equals 30 neutrons.

Answer:

Simply put B.) 30

Explanation:

1,000convert in to scientific notation

Answers

1*10^3
It’s easier to think of it this way- the number of zeros will be the exponent

Answer: 1 x 10^3

Explanation: You can see that the only non-zero digit is 1, so it is 1 x 10^x1,000 has 3 zeroes to the left of the period, so it is1x 10^3. Quite simple!

The tendency of an element to react is closely related toa. its atomic mass.
b. attractions between its atoms.
c. the number of valence electrons in atoms of the element.
d. the ratio of protons to neutrons in atoms of the element

Answers

The tendency  of an element  to react  is closely  related to  the number  of valence   electrons in atoms of the element (answer  C).


   Explanation

Valence  electrons  are outer  shell  electrons  of an atom.They govern the bonding   behavior  of  an element.


 when element react  to form compound, valence  electron  are involved.

Valence electrons  are involved in a reaction either by sharing  among   atoms or may be  transferred  from one  atom  to another.

For example in  formation  of NaCl bond there  is transfer of  valence electron between  Na  and Cl. Na  donate 1 valence electron  while Cl accept 1 electron to form NaCl
Answer: c. the number of valence electrons in atoms of the element

The valence electrons determine how it would bond and if it would react.
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