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3 years ago

b. Determine the molecular formula of a molecule with an empirical formula NH2and a molar mass of 32 g/mol.

1 answer:

5 0

I'm taking this lesson now, so imma help u ( if u need anything else ask me)

so given Molar mass= 32 g/mol
molar mass= (empirical formula) n
32 = (14x1 + 2x1) n
32 = 16 n , so n= 2
so, molecular formula= N2H4

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Typically, water runs through the baseboard copper tubing and, therefore, fresh hot water is constantly running through the pipi

Aleksandr [31]

Answer: -

3.3° C

Explanation: -

Mass of water m = 180.5 g

Energy released as heat Q = 2494 J

Specific heat is defined as the heat required to raise the temperature of the unit mass of a given substance by 1 C.

Specific heat of water Cp = 4.184 (J/g)⋅∘C

Using the formula

Q = m x Cp x ΔT

We get temperature change ΔT = Q / (m x Cp)

= 2494 J / ( 180.5 g x 4.184 (J/g)⋅∘C

= 3.3° C

Thus the temprature change, (ΔT), of the wateris 3.3 °C if 180.5 g of water sat in the copper pipe from part A, releasing 2494 J of energy to the pipe

6 0

3 years ago

PLEASE ANSWER ASAP!!!!!!! 50 points if the answer is correct!

Ad libitum [116K]

mL acetic acid

mL water

Explanation:

Since

of the vinegar, by volume, is acetic acid, and we have

100

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100

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8 0

3 years ago

How many moles are in 3.0g of A1203?

vfiekz [6]

Answer:

0.065 moles

Explanation:

4 0

3 years ago

Describe the role of oceans in the water cycle?

Ainat [17]

Answer: The ocean plays a key role in this vital cycle of water. The ocean holds 97% of the total water on the planet; 78% of global precipitation occurs over the ocean, and it is the source of 86% of global evaporation. ... Water evaporates from the surface of the ocean, mostly in warm, cloud-free subtropical seas.

Explanation:

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4 0

2 years ago

Read 2 more answers

Write a double replacement precipitation reaction A precipitate forms when aqueous solutions of nickel(II) chloride and silver(I

harkovskaia [24]

<u>Answer:</u> The balanced chemical equation is written below.

<u>Explanation:</u>

Double displacement reaction is defined as the reaction in which exchange of ions takes place.

$AB+CD\rightarrow CB+AD$

Precipitation reaction is defined as the reaction in which an insoluble salt is formed when two solutions are mixed containing soluble substances. The insoluble salt settles down at the bottom of the reaction mixture.

When nickel (II) chloride reacts with silver (I) nitrate, it leads to the formation of white precipitate of silver chloride and an aqueous solution of nickel (II) nitrate.

The balanced chemical equation for the above reaction follows:

$NiCl_2(aq.)+2AgNO_3(aq.)\rightarrow 2AgCl(s)+Ni(NO_3)_2(aq.)$

By Stoichiometry of the reaction:

1 mole of aqueous solution of nickel (II) chloride reacts with 2 moles of aqueous solution of silver (I) nitrate to produce 2 moles of solid silver chloride and 1 moles of aqueous solution of nickel (II) nitrate

Hence, the balanced chemical equation is written above.

3 0

3 years ago