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Anvisha [2.4K]
3 years ago
12

Help me out with this question please!

Chemistry
1 answer:
Vinil7 [7]3 years ago
4 0

Answer: 613Hm2 x tan (x101 10\sqrt{x}3)

Explanation:

  • convert the decimal to a fraction
  • calculate the product
  • transform the expression
  • simplify the radical expression
  • okay i recommend photomath because idek this work i got these answers from the app so yeah good luck
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Which statement correctly compares barium nitrate (Ba(NO3)2) and scandium nitrate (Sc(NO3)3)?
3241004551 [841]
<h2>D. They contain the same number of elements.</h2>

Explanation:

The formula (Ba(NO3)2) contains 9 atoms.  

1 Barium atom (Ba)

Contains 2 NO3 groups -

    2 Nitrogen atoms (N) x 2

    6 Oxygen atoms (O3) x 2

3 Elements in total

The formula (Sc(NO3)3) contains 13 atoms.

1 Scandium atom (Sc)

Contains 3 NO3 groups -

    3 Nitrogen atoms (N) x 3

    9 Oxygen atoms (O3) x 3

3 Elements in total

They do not have the same number of atoms.

They do not have the same number of oxygen atoms.

They do not contain the same number of NO3 groups.

They do have the same number of elements.

8 0
4 years ago
When electrons move closer to a more electronegative atom, what happens? the more electronegative atom is _____?
djverab [1.8K]
<span>The more electronegative atom is reduced.</span>
5 0
4 years ago
What is the net ionic equation for this reaction?
Ghella [55]
C2H3O2–(aq) + H+(aq) → HC2H3O2(aq)
6 0
3 years ago
Read 2 more answers
The volume of CO2 at 99.3 kPa was measured at 455 cm3. What will the volume be if the pressure is adjusted to 202.6 kPa?
Marizza181 [45]

Answer:

<h3>The answer is 223.0 cm³</h3>

Explanation:

To find the volume when the pressure is at 202.6 kPa we use Boyle's law which is

P_1V_1 = P_2V_2

where

P1 is the initial pressure

P2 is the final pressure

V1 is the initial volume

V2 is the final volume

Since we are finding the final volume

V_2 =  \frac{P_1V_1}{P_2}  \\

From the question

P1 = 99.3 kPa = 99300 Pa

V1 = 455 cm³

P2 = 202.6 kPa = 202600

So we have

V_2 =  \frac{99300 \times 455}{202600}  =   \frac{45181500}{202600}  \\  = 223.008390...

We have the final answer as

<h3>223.0 cm³</h3>

Hope this helps you

6 0
4 years ago
A mole, which is a unit in chemistry, contains 6.02 x 1023 atoms or particles. How many zeroes follow the 2 when this number is
VLD [36.1K]

Answer:

A) 21.

Explanation:

  • Avogadro's number is the number of the atoms or elements that present in one mole of the substance or the element.
  • It is equal 6.02 x 10²³.
  • If it is written in standard form it will have 21 zero following 2.
  • 60200000000000000000000.
5 0
3 years ago
Read 2 more answers
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