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alexgriva [62]
3 years ago
10

The a ______ planet is from the sun, the _______ it takes the planet to revolve around the sun. Making the "year" for that plane

t Longer
Chemistry
1 answer:
Ksenya-84 [330]3 years ago
7 0

Answer:

Farther; longer.

Explanation:

In the early nineties When the research on solar system first started it was found out that the solar system has 9 planets which are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. Pluto which is considered as the number 9 of the planets in the solar system has been removed in the year 2006 and labelled as a "dwarf planet'' hence, Neptune is considered as the farthest planet from the Sun.

The farther the planets are from the sun, the longer it will take them to orbit round the sun. For instance, it only takes around 87.97 days for mercury(first planet nearer to the sun) to orbit round the sun, while it takes the earth (third planet nearer to the sun) 365 1/4 days to orbit round the sun.

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The ksp of lead(ii) carbonate, pbco3, is 7.40 × 10-14. calculate the solubility of this compound in g/l.
Dennis_Churaev [7]
The  molar  solubility  is  the  Pb ions  present. PbCO3  dissociate  to  form  Pb  ions  and CO3  ions
Ksp  7.40x10^-14 is equal to  (Pb  ions) (CO3 ions)
Pb ions  correspond  to  CO3  ions
(pb ions)( Pb ions) is  equal to 7.40x10^-14
therefore  Pb  ions is square  root  of 7.4x10^14 which  is 2.27x10^-7m
In  
g/l   is (2.27x10^-7) x 267(RFM  of PbCO3) which  is  6.06x10^-5 g/l
5 0
3 years ago
Check all that apply.
White raven [17]

Answer:

4 for C in CH4

+4 for C in CO2

-2 for O in all substances

+1 for H in both CH4 and H2O

option 1,2,3 and 4 are correct. Option 5 is not correct

Explanation:

Step 1: Data given

Oxidation number of H = +1

Oxidation number of O = -2

Step 2: The balanced equation

CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)

Step 3: The oxidation numbers

-4 for C in CH4

 ⇒ Oxidation number of H = +1

    ⇒ 4x +1 = +4

C has an oxidation number of -4

This is correct.

+4 for C in CO2

 ⇒ Oxidation number of O = -2

    ⇒ 2x -2 = -4

C has an oxidation number of +4

This is correct.

-2 for O in all substances

⇒ this is correct, the oxidation number of O is always -2 (except in H2O2 and Na2O2)

This is correct.

+1 for H in both CH4 and H2O

⇒ this is correct, the oxidation number of H is always +1 (except in metal hydrides).

This is correct.

+4 for O in H2O

 ⇒ Oxidation number of H = +1

    ⇒ 2x +1 = +2

The oxidation number of O is -2

This is not correct

5 0
3 years ago
HELP MEEEE ASAP!!! Answer these questions based on what you learned from the passage. You can assume any body structure comes fr
erica [24]

Answer:

1.Legs

2.Arms and hands

3.Armor

4.Skeletal

5.Carpenters

6.Brain

7.Skin

8.Blood

Explanation:

You can google dem and it will show you all the answers

4 0
4 years ago
What is the mass of 20.0 L of sulfur dioxide (SO2) at STP?
larisa86 [58]

Answer:

Mass = 57.05 g

Explanation:

Given data:

Volume of SO₂ = 20.0 L

Temperature = standard = 273 K

Pressure = standard = 1 atm

Mass of SO₂ = ?

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

n = PV/RT

n = 1 atm ×  20.0 L / 0.0821 atm.L/ mol.K× 273 k

n =  20.0  / 22.41/mol

n = 0.89 mol

Mass of SO₂:

Mass = number of moles × molar mass

Mass = 0.89 mol × 64.1 g/mol

Mass = 57.05 g

6 0
3 years ago
Which of the following examples demonstrates acceleration?
mrs_skeptik [129]
The answer is A.) this is because he is moving at a rate that is unknown so we don't know if he is running slower or faster if he is, he is moving by accelerating up or down.
Hope I helped
TeenOlafLover <3
5 0
4 years ago
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