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Scrat [10]
3 years ago
7

The solar wind carries mass away from the Sun at a rate of about 1.5 million tons per second (1 ton = 1000 kg). At this rate, ho

w many years would it take for all of the Sun's mass to escape?
Chemistry
1 answer:
vova2212 [387]3 years ago
5 0

Answer:

1.75×10^12years

Explanation:

In one second, 1.5 million tons (1.5×10^6 tons = 1.5×10^6 × 1000kg = 1.5×10^9kg) of sun is carried away by solar wind

Mass of the sun = 1.989×10^30kg

Time for all of the sun's mass to escape = 1.989×10^30/1.5×10^9 × 1 sec = 1.326×10^21 sec × 1 year/7.57×10^8 sec = 1.75×10^12 years

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Given the following list of atomic and ionic species, find the appropriate match for questions 2-4. Please Explain.
OleMash [197]

Answer:

2. (C) K⁺; 3. (E) Hg⁺; 4. Hg⁺

Explanation:

We must first write the electron configurations of the different species.

(A) Fe²⁺

Fe:     [Ar]4s²3d⁶

Fe²⁺: [Ar]3d⁶

When removing electrons from a transition metal ion, you remove the s electrons first.

(B) Cl

Cl: [Ne]3s²3p⁵

(C) K⁺

K:   [Ar]4s

K⁺: [Ar]

(D) Cs

Cs: [Xe]6s

(E) Hg⁺

Hg:   [Xe]6s²4f¹⁴5d¹⁰

Hg⁺: [Xe]6s4f¹⁴5d¹⁰

2. K⁺ has a noble gas configuration

3. Hg⁺ has electrons in f orbitals.

4. The electron configuration of Au is [Xe]6s4f¹⁴5d¹⁰, not [Xe]6s²4f¹⁴5d⁹, because a filled d subshell is more stable than a filled s subshell.

Thus, Hg⁺ is isoelectronic with Au.

4 0
4 years ago
Three blocks of the same mass are placed in front of you. Block A has a volume of
Ivan

Given :

Three block of same mass name A , B and C .

Sides of block A , B and C is 3.0 cm , 5.0 cm and 10.0 cm .

To Find :

Which block has the higher  density .

Solution :

We know , density \rho is given by :

\rho=\dfrac{M}{V}   ......1 )

Here , V is volume .

Now , volume V for cube is given :

V=a^3    .......2 )

(  Here , a is the side of cube )

Now ,form equation 1 we can see if mass remains constant then density decrease with increase in volume.

Therefore , cube with minimum side will have higher density , in this case it is 3 cm block .

Hence , this is the required solution .

8 0
3 years ago
Select the correct answer from each drop-down menu. How are real gases different from ideal gases? Real gases differ from ideal
lawyer [7]

They have a mass for the particles

There are no totally elastic collisions

There are intermolecular forces

8 0
4 years ago
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3. Calculate the answers to the appropriate number of significant figures. e) 43.678 x 64.1 = f) 1.678/0.42 =
Sophie [7]
Where’s the pictures
8 0
3 years ago
The compound IF5 contains Question 16 options: polar covalent bonds with partial negative charges on the F atoms. ionic bonds. p
larisa86 [58]

Answer:

See explanation

Explanation:

The molecule IF5 possesses five I-F polar bonds. However, the presence of polar bonds does not automatically imply that the molecule will be polar.

The geometry of the molecule is very important in determining the polarity of a compound. Since IF5 has a lone pair of electrons, the molecule is bent and as such there is a permanent dipole moment created in the molecule thereby making IF5 polar in nature.

6 0
3 years ago
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