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Alex_Xolod [135]
3 years ago
9

NEED HELP NOW, TAKING EXAM

Chemistry
1 answer:
satela [25.4K]3 years ago
3 0
D) the physical force over an area
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The specific heat of a certain type of cooking oil is 1.75 j/(g·°c). how much heat energy is needed to raise the temperature of
love history [14]
   The energy needed  to  raise   the  temperature   of 2.83 kg  of   the oil  from  23  to  191  is  calculated  using   Mc  delta T  formula

M= mass (  2.83  Kg  to  grams  =  2.83  x1000=  2830 grams)
C=  specific   heat   capacity  =   1.75  j/g/c
delta T=  change  in  temperature =   191-  23 =  168  c

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5 0
4 years ago
what is the trend for the size as you go from Be to Mg to Ca? does the atomic size increase, decrease, or remain the same? how w
lys-0071 [83]

Answer:

the size of Ca is the greatest ,then Mg is the greater on size than Be

Explanation:

if you make the  electron configuration for each of the elements, what  is the main  difference  u gonna see ?

Be 4   1s2/2s2

Mg 12 1s2 /2s2 2p6/3s2

Ca 20 1s2 /2s2 2p6/3s2 3p6 3d/4s2

see that all the elements are in the same group but are in different period

u gonna see the last electron valance shell in Ca are too far  from its nucleus but in  Be the last electrons are too close and more attracted to the atom's nucleus , so the size of Ca is the biggest then Mg then Be

4 0
4 years ago
What mass of ammonium chloride (NH4Cl) would you use to prepare 85.0 mL of a 1.20M solution NH4Cl?
NeX [460]

Answer:

Form: M= mols solute/ liters solution

Ans: 5.46 NH4Cl

6 0
3 years ago
What is a solvent? what is a solute ? which one is usually found in the greater amount?
PSYCHO15rus [73]
A solvent is something that can have something else dissolved within it and turn into a homogenous solution, while the solute is that something else that can be dissolved into the solvent. Usually, the solvent is found in greater amount because most (except for rare cases) solvents have a saturation point that is below the equal-mass point.
5 0
4 years ago
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