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2 years ago

P4+ __02_ P4010 I need help ASAP

Chemistry

1 answer:

klasskru [66]2 years ago

8 0

Answer:

$P_4+5O_2\rightarrow P_4O_{10}$

Explanation:

Hello!

In this case, when we want to balance chemical reactions such as in this case, the idea is to equal to number of atoms of each element at each side of the equation according to the lay of conservation of mass, just as shown below:

$P_4+5O_2\rightarrow P_4O_{10}$

Because we have four phosphorous and ten oxygen atoms at each side.

Best regards!

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Which of the subshells below do not exist due to the constraints upon the angular momentum quantum number?A) 2dB) 2sC) 2pD) all

Gnom [1K]

Answer:

Option A): Due to the constraints upton the angular momentum quantum number, the subshell 2d does not exist.

Explanation:

The angular momentum quantum number, identified with the letter l (lowercase L), number is the second quantum number.

This number identifies the shape of the orbital or kind of subshell.

The possible values of the angular momentum quantum number, l, are constrained by the value of the principal quantum number n: l can take values from 0 to n - 1.

So, you can use this guide:

Principal quantum Angular momentum Shape of the orbital

number, n quantum number, l

1 0 s

2 0, 1 s, p

3 0, 1, 2 s, p, d

Hence,

the subshell 2d (n = 2, l = 2) is not feasible.

2s (option B) is possible: n = 2, l = 0

2p (option C) is possible: n = 2, l = 1

7 0

3 years ago

what concentration in parts per million in a solution that contains .008 grams of o2 dissolved in 1000 grams of water

julia-pushkina [17]

Ppm = mass of solute mg / mass of solvent kg

0.008 * 1000 = 8.0 mg ( solute )

1000 / 1000 = 1.0 kg (solvent )

ppm = 8 / 1

= 8.0 ppm

hope this helps!

7 0

2 years ago

A fixed mass of gas has a volume of 92 cm cube and 3 degrees Celsius. What will be its volume at 18 degrees celsius if the press

8090 [49]

Answer:

94.8454

Explanation:

Let volume be V

Let Temperature be T

V1= 92

T1= 3C but to kelvin 273+3= 300K

V2= ?

T2= 18 C but to kelvin 18+273= 291

$\frac{v1}{t1} = \frac{v2}{t2}$

$\frac{92}{300} = \frac{v2}{291}$

$v2 \times 300 = 92 \times 291$

$v2 = \frac{92 \times 291}{300}$

$v2 = 94.8454$

3 0

2 years ago

At 524 mm Hg and 35 °C, a sample of gas occupies a volume of 275 ml. The gas is transferred to a 325-ml flask and the temperatur

Deffense [45]

Answer:

400.197mmHg

Explanation:

P1V1 / T1 = P2V2 / T2

Where P1=524 mm Hg V1 =275 ml T1 = 35°C +273 = 308k

V2= 325-ml T2= 5°C+273 = 278k , P2= ?

Substituting the values into the formula.

524 mm Hg ×275 ml /308k = P2×325-ml/278k

Cross multiply

524 mm Hg ×275 ml×278k=308k×P2×325-ml

40059800= 100100×P2

P2 = 40059800/100100

P2= 400.197mmHg

Hence, the second pressure will be 400.197mmHg

6 0

2 years ago

How does the atomic arrangement of atoms lead to its crystal structure like was seen in the sample of bronze and gold and Timber

Margaret [11]

In mineralogy and crystallography, a crystal structure is a unique arrangement of atoms in a crystal. Atomic arrangement of atoms in this kind of structure usually very symmetrical and highly ordered. Causing the component within the structure is so strong and hard to break. A crystal structure is composed of a unit cell, a set of atoms arranged in a particular way; which is periodically repeated in three dimensions on a lattice. Crystal structure would be commonly found in solid compounds.

7 0

2 years ago