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2 years ago

Select the correct terms to complete the statement:

Chemistry

1 answer:

Likurg_2 [28]2 years ago

5 0

Answer:

The particles that make up a substance in its liquid state have more kinetic energy than those of the same substance in its solid-state.

For a solid to melt, energy must be added to the system.

For a liquid to freeze, energy must be removed from the system.

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Why does the ice melt when you hold it in your hand? A.Heat is transferred from your hand to the ice cube. B.Heat from the ice c

Thepotemich [5.8K]

A. Heat is transferred from your hand to the ice cube.

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2 years ago

Round the following number to four figures: 45.4673

zhenek [66]

This says four figures. The 4 figures you should use are 4546 with a peek at 7 to see what effect it will have on the 4 main figures.

45.467 rounds to 45.47

You round the 4th figure up one. You are not concerned about the decimal places in this question.

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3 years ago

Read 2 more answers

Hey guys!

melamori03 [73]

Pajamas

Out fit for each day + 2 extra

Athletic clothes

Light hoodie

Bathing suit + cover up

Underwear

Socks

Bra's

Sunscreen

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Walking shoes

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Blow dryer

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Hair spray

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Have music + shows/ movies downloaded

Hope this helps you take off anything you don't want or anything you don't need

7 0

2 years ago

What is the half life of an isotope that is 75% decayed after 16 days?

inna [77]

Answer:

half life will be 8days

5 0

2 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

1 year ago