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2 years ago

A + B + C → D + E

Chemistry

2 answers:

brilliants [131]2 years ago

8 0

I believe it is B... because all balance equation are supposed to follow the law of conservation of mass

Alexeev081 [22]2 years ago

5 0

Answer: The correct answer is Option B.

Explanation:

Law of conservation of mass states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.

This also means that total mass on the reactant side must be equal to the total mass on the product side.

For the given chemical reaction:

$A+B+C\rightarrow D+E$

Total mass on reactant side = Total mass on product side

Hence, the correct answer is Option B.

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10) an object has mass of 50g 500mg and 0.1g. express the total mass of the object in grams

Pavel [41]

500 mg in g :

1 g ----------- 1000 mg
? -------------- 500 mg

500 x 1 / 1000 => 0.5 g

total mass:

50 g + 0.5 g + 0.1 g => 50.6 g

hope this helps!

8 0

2 years ago

For the following aqueous reaction, complete and balance the molecular equation and write a net iconic equatio, making sure to i

pav-90 [236]

Answer:

Balance molecular equation:

K2CO3(aq) + Sr(NO3)2(aq) → SrCO3(s) + 2KNO3(aq)

Net ionic equation:

CO3∧-2(aq) + Sr∧+2(aq) → SrCO3(s)

Explanation:

Potassium carbonate = K2CO3

Strontium nitrate = Sr(NO3)2

Chemical equation:

K2CO3 + Sr(NO3)2 → SrCO3 + KNO3

Balance chemical equation with physical states:

K2CO3(aq) + Sr(NO3)2(aq) → SrCO3(s) + 2KNO3(aq)

Ionic equation:

2K+(aq) + CO3∧-2(aq) + Sr∧+2(aq) + 2NO∧-3(aq) → SrCO3(s) + 2K+(aq) + 2NO∧-3(aq)

Net ionic equation:

CO3∧-2(aq) + Sr∧+2(aq) → SrCO3(s)

2K+ and 2NO∧-3 ions are spectator ions that's way these are not written in net ionic equation.

Spectator ions:

These are the ions that are present same on both side of chemical reaction and does not effect the equilibrium.

6 0

2 years ago

Need answer to this question asap. it is worth 10 points

andrey2020 [161]

The molecular formula of the liquid : C₆H₁₂

<h3>Further explanation</h3>

Given

molar ratio C H = 1.2 : 0.12

0.12 g at STP gave 32 cm³(0.032 L)

Required

The molecular formula

Solution

At STP, 1 mol = 22.4 L, so for 0.032 L :

mol = 0.032 : 22.4

mol = 0.00143

Molar mass (M) of liquid :

M = mass : mol

M = 0.12 g : 0.00143 mol

M = 83.92≈84 g/mol

C : H = 1 : 2

(CH₂)n=84

(12+2.1)n=84

(14)n=84

n=6

(CH₂)₆=C₆H₁₂

3 0

2 years ago

Maurels

lora16 [44]

<h2>Answer:</h2>

the force of gravity turn that potential energy into enough kinetic energy to topple a domino larger than its self.

Explanation:

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AND MARK ME AS BRAINLIST

6 0

2 years ago

How many times do we fart a day

UkoKoshka [18]

Answer:

average is five

Explanation:

5 0

2 years ago

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