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nikdorinn [45]
3 years ago
12

What would be the formula for diphosphorus pentoxide? A. PO5 B. P2O5 C. P5O D. P5O2

Chemistry
2 answers:
Dovator [93]3 years ago
6 0

I am sure, the answer is variant B.

Nookie1986 [14]3 years ago
4 0

heeeeeeyyyyyy yalllllll the answer is B!!!!!!!!!!!

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A freight train rushed down the track going south at 60 mph. This is an example of ____.
dalvyx [7]
This Question Would Be "b"
4 0
3 years ago
How much energy is added to change 180g of liquid water to gas at 100 degrees Celsius
Finger [1]

Answer:

40.7 kJ  

Step-by-step explanation:

The formula for the heat, q, needed to evaporate a liquid is

q = mΔHvap


<em>Data:  </em>

        m = 180 g

ΔHvap = 2260 J/g

<em>Calculation: </em>

q = 180 g × 2260 /1

q = 40 700 J = 40.7 kJ

7 0
3 years ago
A water solution is found to have a molar oh- concentration of 3.2 x 10-5. the solution would be classified as :_______.
Anuta_ua [19.1K]

A water solution is found to have a molar oh- concentration of 3.2 x 10-5. the solution would be classified as neutral.

The concentration of hydroxide ions (OH-) is measured by pOH. It is a way of expressing how alkaline a solution is. At 25 degrees Celsius, aqueous solutions with pOH values of 7 or less are neutral, whereas those with pOH values of 7 or more are acidic. The hydrogen ion potential is known as pH. The potential of hydroxide ions is known as pOH. 2. It is a scale used to estimate the hydrogen ion (H+) concentration in the solution. The hydroxide ion (OH-) concentration of the solution is measured using this scale.

pH + pOH = 14

 pOH = 3.2x 10-5

[OH-] = 10^(-pOH) =10^(- 3.2x 10-5)

= 0.99

7 0
2 years ago
A series circuit has two 5.0-ohm resistors and a power source of 9.0 volts. How will the current be affected and what will it be
miskamm [114]
The formula for solving current given with resistance and power source or voltage is shown below:
I = V/R  

When two 5 ohms resistors are in series, we have:
I = 9 volts / (5+5 ohms)
I = 0.9 amperes

When it is being added with another 7.5 resistors, we have:
I = 9 volts / (5+5+7.5 ohms)
I = 0.529 ampere

The answer to the question is the letter "D. decrease; 0.51 amps".
3 0
3 years ago
Solutions of lead(II) nitrate and potassium iodide were combined in a test tube.
AnnyKZ [126]

Answer:

Explanation: When solutions of potassium iodide and lead nitrate are combined?

The lead nitrate solution contains particles (ions) of lead, and the potassium iodide solution contains particles of iodide. When the solutions mix, the lead particles and iodide particles combine and create two new compounds, a yellow solid called lead iodide and a white solid called potassium nitrate. Chemical Equation Balancer Pb(NO3)2 + KI = KNO3 + PbI2. Potassium iodide and lead(II) nitrate are combined and undergo a double replacement reaction. Potassium iodide reacts with lead(II) nitrate and produces lead(II) iodide and potassium nitrate. Potassium nitrate is water soluble. The reaction is an example of a metathesis reaction, which involves the exchange of ions between the Pb(NO3)2 and KI. The Pb+2 ends up going after the I- resulting in the formation of PbI2, and the K+ ends up combining with the NO3- forming KNO3. NO3- All nitrates are soluble. ... (Many acid phosphates are soluble.)

3 0
3 years ago
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