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marin [14]
3 years ago
5

M is a mysterious element whose molar mass is 141.0 g/mol. When combined with oxygen, the formula of the compound is M2O5. What

is the percent of M in the compound?​
Chemistry
1 answer:
Alex Ar [27]3 years ago
7 0

Answer:

I d k

Explanation:

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A sample of iron with a mass of 50.0 grams absorbs 2500 J of thermal energy. How much would the temperature of this sample chang
ella [17]

Temperature change would be 112.6° C.

<u>Explanation:</u>

We can find the amount or heat absorbed or emitted during any reaction by finding the product of their mass, specific heat, and change in temperature of the metal.

Mass of the iron, m = 50.0 g

Amount of heat absorbed, q = 2500 J

Change in temperature, ΔT = ?

Specific heat of Iron, C = 0.444 J/g °C

\boldsymbol{q}=\boldsymbol{m} \times \boldsymbol{C} \times \boldsymbol{\Delta} \mathbf{T}

Plugin the values and rearrange the equation to get the change in temperature as,

\Delta \mathbf{T}=\frac{\mathbf{q}}{c \times m}

\Delta \mathrm{T}=\frac{2500 \mathrm{J}}{0.444 \frac{J}{\mathrm{g}^{\circ} \mathrm{C}} \times 50 \mathrm{g}}=112.6^{\circ} \mathrm{C}

6 0
3 years ago
What mass of CuSO4 are needed to prepare 100 mL of a 0.10 M solution? grams
kaheart [24]

1.596 grams is the mass of CuSO4  needed to prepare 100 ml solution of 0.1 M solution.

Explanation:

Data given:

Volume of the solution = 100 ml or 0.1 litre

molarity of the solution = 0.10 M

mass of CuSO_{4} = ?

atomic mass of CuSO_{4}  = 159.6 grams/mole

The mass will calculated by using the following relations:

number of moles = \frac{mass}{atomic mass of 1 mole}     equation 1

molarity = \frac{number of moles}{volume}                          equation 2

putting the value of number of moles in equation 2

molarity = \frac{mass}{atomic mass X Volume}

mass = molarity x atomic mass x volume

mass = 0.1 x 0.1 x 159.6

         = 1.596 grams

1.596 grams will form 100ml solution 0.1 M

5 0
3 years ago
Why does the moon spin around the earth and the earth spins around the sun
liberstina [14]

This easy bro there is only one answer Gravity

but here my advance word

Sometimes the gravity of big objects would capture smaller ones in orbit. This could be one way the planet acquired the moon

7 0
4 years ago
Complete and balance the following equation:
sertanlavr [38]
You need to add the last substance to the products side(the right sode of the arrow). You have hydrogen and oxygen - water.

You get: BrO3 + N2H4 -> Br2 + N2 + H2O

# of Br: 1x1 = 1 # of Br: 2x1 = 2
O: 3x1 = 3 O: 1x1 = 1
N: 2x1 = 2 B N: 2x1 = 2
H: 4x1 = 4. H: 2x1 = 2

Br:
Multiply the reactant (left) side by 2 to balance.

O:
You've just multiplied the reactant oxygen by 2 so now the reactant side equals 6. Multiply the product (right) side by six as well.

H:
The product side is now equal to 12. Multiply the reactant side by 3 to balance.

N:
Now you have to balance N because the reactant side has been risen. So multiply the product side by three as well.

You end up with the complete and balanced equation:

2BrO3 + 3N2H4 -> Br2 + 3N2 + 6H2O
4 0
4 years ago
How does fingerprinting work with remote sensing and dna barcodes
Ede4ka [16]

Fingerprint is the print of our finger, remote sensing are placed usually in locks in safety areas, it identifies the matching fingerprint and allows the people to enter, and in DNA barcode, location can be detected by remote sensing.

<h3>What is remote sensing?</h3>

Remote sensing is the identification of the sense of people, the data is feed to the device then according to the data it senses the presence and allow that people.

DNA barcoding is taking small fragment of DNA to find the progeny or its availability.

Thus, Remote sensing is typically used in locks in security areas to identify matching fingerprints and allow people to enter, and in DNA barcodes, location can be detected using remote sensing.

Learn more about remote sensing

brainly.com/question/10839378

#SPJ1

3 0
3 years ago
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