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valina [46]
2 years ago
10

PLZ HELP!!!! I ONLY HAVE 20MIN.

Chemistry
2 answers:
VARVARA [1.3K]2 years ago
5 0

Answer:

number 4

Explanation:

sorry if wrong

anastassius [24]2 years ago
3 0

Answer:

4

Explanation:

in order for the bobber to float,it must be less dense, and for the line to sink, it must be more dense.

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A reaction between an acid and a base produced lithium chloride (LiCl). What acid and base combination could produce this salt?
erica [24]

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B. hydrochloric acid and lithium hydroxide

Explanation:

4 0
2 years ago
V7
dangina [55]

Answer:

sodium chloride

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3 years ago
A florist prepares a solution of nitrogen-phosphorus fertilizer by dissolving 5.66 g of NH₄NO₃ and 4.42 g of (NH₄)₃ PO₄ in enoug
Alexandra [31]

In finding the molarity of a solution, we use the following formula:

M=moles soluteL solution

What is Molarity?

The number of moles of the solute is calculated by dividing the mass of the solute by its molar mass.

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The molar mass of  NH4NO3 and (NH4)3PO4 are  80.043 g/mol and 149.0867 g/mol, respectively.

molesNH+4inNH4NO3=5.66 g80.043 g/mol×1molNH+41molNH4NO3=0.0707 mol

molesNH+4in(NH4)3PO4=4.42 g149.0867 g/mol×3molNH+41mol(NH4)3PO4=0.0889 mol

total molesNH+4=0.0707 mol+0.0889 mol=0.1596 mol

molesPO3−4in(NH4)3PO4=4.42 g149.0867 g/mol×1molPO3−41mol(NH4)3PO4=0.0296 mol

[NH+4]=0.1596 mol20.0 L=7.98×10−3 M NH+4

[PO3−4]=0.0296 mol20.0 L=1.48×10−3 M PO3−4

Therefore, [PO3−4]\\ has a molarity of  1.48×10−3 M PO3−

To learn more about Molarity click on the link below:

brainly.com/question/19943363

#SPJ4

5 0
2 years ago
SOMEONE HELP PLEASE 60 POINTS!!!!!!! IM TIMED TOO SO PLS
Sergeu [11.5K]

Explanation:

ooohhhh it's free points,,,thank you mwahhh hahahahahaha jokeee

sorry I don't have any ideas

4 0
3 years ago
An element's atomic number is 65. How many protons would an atom of this element have?
KIM [24]
65. The atomic number is the number of protons in the atom.
7 0
3 years ago
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