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Sergeeva-Olga [200]
3 years ago
15

Can someone help me with these?

Chemistry
1 answer:
kumpel [21]3 years ago
5 0
What is there, I don’t see anything ..
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how does the increased salinity of the dead sea due to fertiliser industry impact the microscopic organisms that live there​
polet [3.4K]
The sea is called "dead" because its high salinity prevents macroscopic aquatic organisms, such as fish and aquatic plants, from living in it, though minuscule quantities of bacteria and microbial fungi are present. In times of flood, the salt content of the Dead Sea can drop from its usual 35% to 30% or lower.
5 0
3 years ago
An adult with the flu has a temperature of 102°F. Express your answer as an integer.
Pie

Answer: <u>A integer is a whole number.</u>

<em>An adult with the flu has a temperature of 102°F</em>

<em>A brain contains  neurons (moving the decimal point to the right side power of 10 increases........here decimal point is moved to two places to the right side so power of 10 decreases from 10 to 8)</em>

<em>The time for a nerve impulse to travel from the feet to the brain is  s. (moving the decimal point to the right side power of 10 increases........here decimal point is moved to two places to the right side so power of 10 decreases from 0 to -2)</em>

Explanation:

i hope this answer your question if this is wrong or correct please let me know

5 0
3 years ago
How many electrons can the n=4 shell hold?<br> a. 8b.16c.32d.64?
ra1l [238]
The maximum the fourth shell can have is 32.
6 0
3 years ago
Read 2 more answers
How much heat must be absorbed by 125 g of ethanol to change its temperature from 21.5 ∘C to 34.8 ∘C? (Specific heat capacity of
Katarina [22]

Answer:

Option D. 4.02 kJ

Explanation:

A simple calorimetry problem

Q = m . C . ΔT

ΔT = Final T° - Initial T°

C = Specific heat capacity

m = mass

Let's replace the data

Q = 125 g . 2.42 J/g∘C . (34.8°C -21.5 °C)

Q= 4023.25 J

We must convert the answer to kJ

4023.25 J . 1kJ /1000 =4.02kJ

3 0
4 years ago
how many mL of a 3.5 M sodium hydroxide will be needed to neutralize 15mL of a 4.3 M hydrochloric acid solution?
kobusy [5.1K]
Step 1 : write a valanced equation..
NaOH + HCl 》NaCl + H2O

Step 2 : find the number of mole of HCl..
1000 ml ..contains 4.3 mole
15ml... (4.3÷1000)×15 =...

Stem 3 : use mole ratio....
HCl : NaOH
1 : 1
So mole is same as calculated above...

Step 4 :
3.5 mole of NaOH is in 1000ml
(4.3÷1000)×15 mole is in ....


Do the calculation
6 0
4 years ago
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