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liubo4ka [24]
3 years ago
6

What do the elements sulfur (s), nitrogen (n), phosphorus (p), and bromine (br) have in common? refer to the periodic table for

help?
Chemistry
2 answers:
ss7ja [257]3 years ago
8 0

Answer:

They have the same number of valence electrons.

s344n2d4d5 [400]3 years ago
7 0
They are all nonmetals
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HELP! What is the percent composition of carbon in caffeine (C₈H₁₀N₄O₂)? Show your work
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Caffeine has the following percent composition: carbon 49.48%, hydrogen 5.19%, oxygen 16.48% and nitrogen 28.85%. Its molecular weight is 194.19 g/mol.

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3 years ago
What is a state function?
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Is a function defined for a system relating several state variables or state quantities that depends only on the current equilibrium thermodynamic state of the system[1] (e.g. gas, liquid, solid, crystal, or emulsion), not the path which the system took to reach its present state. A state function describes the equilibrium state of a system, thus also describing the type of system. For example, a state function could describe an atom or molecule in a gaseous, liquid, or solid form; a heterogeneous or homogeneous mixture; and the amounts of energy required to create such systems or change them into a different equilibrium state.
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PLEASE HELP!?Consumers must eat other organisms for energy. Which organisms are consumers in this food chain?
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4 0
2 years ago
What is the mass of solute in a 500 mL solution of 0.200 M
Fofino [41]

16.4 grams is the mass of solute in a 500 mL solution of 0.200 M .

sodium phosphate

Explanation:

Given data about sodium phosphate

atomic mass of Na3PO4 = 164 grams/mole

volume of the solution = 500 ml or 0.5 litres

molarity of sodium phosphate solution = 0.200 M

The formula for molarity will be used here to know the mass dissolved in the given volume of the solution:

The formula is

molarity = \frac{number of moles of solute}{volume in litres}

    putting the values in the equation, we get

molarity x volume = number of moles

0.200 X 0.5= number of  moles

number of moles = 0.1 moles

Atomic mass x number of moles = mass

putting the values in the above equation

164 x 0.1 = 16.4 grams

16.4 grams of sodium phosphate is present in 0.5 L of the solution to make a 0.2 M solution.

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2 years ago
When precipitation falls in summer, sometimes wind pushes it back up into freezing temperatures before falling again. What will
SVETLANKA909090 [29]

Answer:

A

Explanation:

hail will fall push it back up making it bigger comes back down

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