1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Advocard [28]
3 years ago
12

FIRST ONE TO ANSWER GETS BRAINLIEST!!

Chemistry
2 answers:
leva [86]3 years ago
8 0

Answer:

C

Explanation:

because the water’s speed increases and swimmers can be pulled down to the ocean floor.

Tpy6a [65]3 years ago
5 0

B. The neck is the most dangerous part of the rip current because the water’s speed increases and swimmers can be pushed farther into the ocean.

You might be interested in
I will make you brainless answer this 1 question pleaaeeee!​
marin [14]

C. Point 3

Explanation:

Because it is increasing dramatically

8 0
3 years ago
What do organisms have based on their functions?
mote1985 [20]
Unicellular organisms, cells perform all the basic actions and functions required for living like nutrition, respiration, reproduction etc.

In multicellular organisms, cells divide their tasks on the basis of "DIVISION OF LABOUR" to specialize in certain functions besides respiration etc. Like conduction in neurons, excitation in muscles, RBC production by bone marrow etc.
6 0
3 years ago
Working on-board a research vessel somewhere at sea, you have (carefully) isolated 12.5 micrograms (12.5 ×10–6 g) of what you ho
german

Answer:

The value is Z  =  311.33 \ g/mol

Explanation:

From the question we are told that

The mass of saxitoxin is m  =  12.5 mg = 12.5 * 10^{-6} g

The volume of water is V  =  3.10  mL  =  3.10 *10^{-3} L

The osmotic pressure is P =  0.236 =  \frac{0.236}{760}  =  3.105 * 10^{-4} atm

The temperature is T  =  19^oC  =  19 + 273 =  292 \  K

Generally the osmotic pressure is mathematically represented as

P  =  C  *  T  * R

Here R is the gas constant with value

R =  0.0821 ( L .atm /mol. K)

and C is the concentration of saxitoxin

So

3.105 * 10^{-4}  =  C * 0.0821   *  292

C = 1.295 *10^{-5} mol/L

Generally the number of moles of saxitoxin is mathematically represented as

n = C  *  V

=> n = 1.295 *10^{-5}   *3.10 *10^{-3}

=> n = 4.015 *10^{-8} \  mol

Generally the molar mass of saxitoxin is mathematically represented as

Z  =  \frac{m}{n}

=> Z  =  \frac{12.5 * 10^{-6}}{ 4.015 *10^{-8}}

=> Z  =  311.33 \ g/mol

5 0
4 years ago
Why do different elements make different color flames when you burn them?
Dovator [93]
When you heat an atom, some of its electrons are "excited* to higher energy levels. When an electron drops from one level to a lower energy level, it emits a quantum of energy. ... The different mix of energy differences for each atom produces different colours. Each metal gives a characteristic flame emission spectrum.
7 0
3 years ago
5. How many atoms are in 1.00 mol of carbon atoms?
Verdich [7]

Answer:

idk because idk

3 0
3 years ago
Other questions:
  • BRAINLIEST FOR CORRECT ANSWER!!!!
    11·2 answers
  • Will vote brainliest!! Can someone please help me with the empirical formula of
    10·2 answers
  • What happens when a solid is heated and it changes into a liquid
    9·1 answer
  • Sex cells from female reproductive organ?
    7·2 answers
  • Calculate the density in g/mL of aluminum with a volume of 3.4mL and a mass of 18.99mg.
    5·1 answer
  • Help which one is correct
    8·1 answer
  • In the world of chemisty, a 'mole is a number of something ... a very lary large number of something.
    14·1 answer
  • True or false: When adding acid to base the phenolphthalein indicator changes colour from colourless to pink at the end of the t
    13·1 answer
  • Using standard heats of formation, calculate the standard enthalpy change for the following reaction.
    5·1 answer
  • 5. given the ratio of reactants, what is the possibility of obtaining di- and polychlorinated product? explain.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!