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3 years ago

Balance the equation and identify the type of reaction for ? p4(s) + ? ca(s) → ? ca3p2(s).

1 answer:

3 0

There are different kinds of reactions. To name some, these are the synthesis reaction, decomposition reaction, single-replacement reaction, double-replacement reaction, combustion reaction, redox reaction, etc. For this type of reaction involving two reactants to yield only one product, this is a synthesis reaction.

P₄ (s) + 6 Ca (s) --> 2 Ca₃P₂ (s)

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If 5.12 liters of a 2.75 M phosphoric acid is neutralized by magnesium hydroxide solution of 4.00 M.

Tresset [83]

Answer:

5.28 L

Explanation:

Step 1:

Data obtained from the question.

Volume of acid (Va) = 5.12L

Molarity of acid (Ma) = 2.75M

Molarity of base (Mb) = 4M

Volume of base (Vb) =.?

Step 2:

The balanced equation for the reaction

2H3PO4 + 3Mg(OH)2 → Mg3(PO4)2 + 6H2O

From the balanced equation above,

Mole ratio of the acid (nA) = 2

Mole ratio of the base (nB) = 3

Step 3:

Determination of the volume of the base.

This is illustrated below:

MaVa/MbVb = nA/nB

2.75 x 5.12 / 4 x Vb = 2/3

Cross multiply

4 x 2 x Vb = 2.75 x 5.12 x 3

Divide both side by 4 x 2

Vb = (2.75 x 5.12 x 3)/(4 x 2)

Vb = 5.28 L

Therefore, the volume of the base is 5.28 L

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3 years ago

Read 2 more answers

45.0 g of Ca(NO3)2 are used to create a 1.3 M solution. What is the volume of the solution

Stells [14]

As we know that Molarity is given as,

M = moles / V
Solving for V,
V = moles / M ------------------(1)
Also, moles is equal to,
moles = mass / M. mass -------------(2)
puting value of moles from eq. 2 into eq. 1,
V = (mass / M.mass) / M
Putting values,
V = (45 g / 164 g/mol) / 1.3 mol/dm³

V = 0.21 dm³

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3 years ago

What is the electron configuration for Sodium (Na)?

SpyIntel [72]

The electron configuration for Sodium (Na) is [Ne] 3s1

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Give two example for desert plants and animals? please mark as brainliest

aev [14]

Answer:

Plants : Cactus, tumbleweed

Animals : camel, fennec fox

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2 years ago

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True or False? If friction didn’t exist, an object in motion would stay in motion forever.

nata0808 [166]

Answer:

True

Explanation:

Friction is defined as the force that opposes motion when an object is sliding over a surface.

As a result of friction, all objects moving over a surface eventually come to rest over time.If we were to successfully create a friction-less surface, an object will remain in motion forever because it will encounter no opposition to its motion.

Hence, the resistance to the motion of objects over a surface which causes the objects to come to a halt after moving over the surface for some time is called friction.

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3 years ago