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2 years ago

1. As you increase speed is there an increase or decrease in Kinetic Energy?

Chemistry

1 answer:

drek231 [11]2 years ago

3 0

$\qquad \qquad\huge \underline{\boxed{\sf Answer}}$

1. As you increase speed is there an increase or decrease in Kinetic Energy?

$\qquad \sf \dashrightarrow \: increase$

2. As you increase mass is there an increase or decrease in Kinetic Energy?

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$\qquad \sf \dashrightarrow \: increase$

3. As you decrease speed is there an increase or decrease in Kinetic Energy?

$\qquad \sf \dashrightarrow \: decrease$

4. As you decrease mass is there an increase or decrease in Kinetic Energy?

$\qquad \sf \dashrightarrow \: decrease$

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What is volume? What instrument is used to measure liquid volume? What formula is used to calculate the volume of a solid object

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Answer:

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Explanation:

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3 years ago

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2 years ago

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Na+ + Cl– NaCl Which statement best describes the relationship between the substances in the equation?

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3 years ago

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2NH4Cl(s)+Ba(OH)2⋅8H2O(s)→2NH3(aq)+BaCl2(aq)+10H2O(l) The ΔH for this reaction is 54.8 kJ . How much energy would be absorbed if

irakobra [83]

1) Chemical equation

<span>2NH4Cl(s)+Ba(OH)2⋅8H2O(s)→2NH3(aq)+BaCl2(aq)+10H2O(l)

2) Stoichiometric ratios

2 mol NH4Cl(s) : 54.8 KJ

3) Convert 24.7 g of NH4Cl into number of moles, using the molar mass

molar mass of NH4Cl = 14 g/mol + 4*1 g/mol + 35.5 g/mol = 53.5 g/mol

number of moles = mass in grams / molar mass

number of moles = 24.7 g / 53.5 g/mol = 0.462 moles

4) Use proportions:

2 moles NH4Cl / 54.8 kJ = 0.462 moles / x

=> x = 0.462 moles * 54.8 kJ / 2 moles = 12.7 kJ

Answer: 12.7 kJ
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