All categories

3 years ago

Just awnser #9#10#11#12 please ❤️ i will mark brainliest and also you get 15 points!

Chemistry

1 answer:

saveliy_v [14]3 years ago

3 0

Answer: 9. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

10. The reasons for the differences in the surface temperature of terrestrial planets are due to their distance from the sun and the composition of their atmosphere.

11. 93.48 million miles

12. Iron core

Explanation: Hope this helped!! :)

You might be interested in

A student mixed 100 mL of water at 15°C with 100 mL of water at 65°C. What is the final temperature of the water?

horrorfan [7]

Answer:

50°C

Explanation:

please click the heart and rate excellent and brainleist to ❤☺️☻♨️♨️☻☺️❤

7 0

3 years ago

Charcoal from the dwelling level of the Lascaux Cave in France gives an average count of 0.97 disintegrations of ^14 C per minut

Verdich [7]

Answer:

Explanation:

count given by old sample = .97 disintegrations per minute per gram

count given by fresh sample = 6.68 disintegrations per minute per gram

Half life of radioactive carbon = 5568 years

rate of disintegration

dN / dt = λ N

In other words rate of disintegration is proportional to no of radioactive atoms present . As number reduces rate also reduces .

Let initial no of radioactive be N₀ and after time t , number reduces to N

N₀ / N = 6.68 / .97

Now

$N=N_0e^{-\lambda t}$

$\frac{N}{N_0} =e^{-\lambda t}$

$\frac{6.68}{.97} = e^{\lambda t}$

λ is disintegration constant

λ = .693 / half life

= .693 / 5568

= .00012446 year⁻¹

Putting the values in the equation above

$\frac{6.68}{.97} = e^{.00012446\times t}$

$6.8866 = e^{.00012446\times t}$

1.929577 = .00012446 t

t = 15503.6 years .

4 0

3 years ago

Assume that adhesin gene of Neisseria gonorrhoeae, the pathogen that causes gonorrhea, were mutated. What is the most likely eff

guajiro [1.7K]

When the adhesin gene of Neisseria gonorrhoeae were mutated, the pathogen will be unable to attach to the host cells.

<h3>What do you mean by Pathogens?</h3>

Pathogens may be defined as disease-causing agents. These are mostly microorganisms that infect the body of animals as well as humans.

Adhesin gene plays a very vital role in the attachment of pathogens to the host cells. It is the site where pathogen attack and attaches to host cells and then enters the body to play their function i.e. replication, a decline in the host immune system, and finally disease caused.

Therefore, when the adhesin gene of Neisseria gonorrhoeae were mutated, the pathogen will be unable to attach to the host cells.

To learn more about Pathogens, refer to the link:

brainly.com/question/1008643

#SPJ1

5 0

3 years ago

1. The

mars1129 [50]

Answer: proton

Explanation:

4 0

4 years ago

The average osmotic pressure of ocean water is 28 atm corresponding to a concentration of 0.50m solutes. what is the approximate

RideAnS [48]

Answer : 0.125 M

Explanation : The definition of osmotic pressure is "the pressure can be applied on a pure solvent to prevent it passing into a given solution by osmosis".

So according to this definition, osmotic pressure can be called as directly proportional to the concentration of the solution and hence the pressure can also be directly proportional to the concentration.

Hence, if pressure is getting decreased from 28 to 7 it means it got decreased by 4 times;
28 / 7 = 4 that means;

So the concentration will be also decreased by 4 times so, 0.50 / 4 = 0.125 M

6 0

3 years ago