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3 years ago

10

Please answer a b c :)

1 answer:

olganol [36]3 years ago

8 0

Answer:

i think the letter b is the answer

Explanation:

sana makatulong

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How does mass affect heat absorbed

saul85 [17]

Answer:

Explanation:

Since the transferred heat is equal to the change in the internal energy, the heat is proportional to the mass of the substance and the temperature change. The transferred heat also depends on the substance so that, for example, the heat necessary to raise the temperature is less for alcohol than for water. Hope that helps!:)

5 0

3 years ago

According to the Quantum Mechanical Model, electrons have properties both ________________ and

grin007 [14]

Answer:

Particle and wave

Explanation:

4 0

3 years ago

Consider again the thermite reaction. If 0.0257 g Al react completely, what mass of Fe forms? Use the periodic table to find mol

maxonik [38]

The mass of Fe that is formed is 0.0532 grams

<u><em> Explanation</em></u>

Fe2O3 + 2 Al → Al2O3 + 2 Fe

Step 1: find the moles of Al

moles = mass/molar mass

from periodic table the molar mass of Al= 27 g/mol

moles = 0.0257g /27 g/mol =9.5 x10^-4 moles of Al

Step 2: <em> use the mole ratio to determine the moles of Fe</em>

the moles ratio of Al:Fe is 2:2= 1:1

therefore the moles of Fe is also = 9.5 x10 ^-4 moles

Step 3: <em> find the mass of Fe</em>

mass= moles x molar mass of Fe

from periodic table the molar mass of Fe= 56 g/mol

mass= 9.5 x10 ^-4 moles x 56 g/mol =0.0532 grams

6 0

3 years ago

Read 2 more answers

I think i found the one for me what should i do i dont understand girls feelings i need help

V125BC [204]

Answer:

This is not a correct question.

Explanation:

Revise a question or moderators will come and delete this.

Next time write a better question to avoid warnings.

5 0

4 years ago

Read 2 more answers

A gaseous compound composed of sulfur and oxygen has a density of 9.88 g/L at stp. What is the molar mass of this gas?

Eddi Din [679]

Answer: The molar mass of this gas is 221 g/mol

Explanation:

The relation between density and molar mass is :

$PM=dRT$

where P = pressure of gas = 1 atm (at STP)

M = molar mass of gas = 32 g/mol

d = density of gas = ?

R = gas constant = $0.0821Latm/Kmol$

T= temperature of gas = 273 K ( at STP)

$1atm\times M=9.88g/L\times 0.0821Latm/Kmol\times 273K$

$M=221g/mol$

Thus the molar mass of this gas is 221 g/mol

6 0

4 years ago