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
viktelen [127]
2 years ago
5

The gills, Y, of a fish are usually near external openings that allow water

Chemistry
1 answer:
Lady bird [3.3K]2 years ago
7 0
Soooooo the answer is b
You might be interested in
HELP I DON'T HAVE LONG LEFT AND I'M STRUGGLING SO BAD PLEASE I BEG U TO HELP
vivado [14]
I think it’s oxygen and carbon
8 0
2 years ago
PLEASE HELP ME STRAIGHT AWAY
san4es73 [151]
Desert plants commonly have small wax coated leaves to prevent moisture and water from evaporating. It is an important feature in desert plants to adapt to the arid climate. The wax on the leaves also protect the leaves from the chilling temperature of the desert at night. 
4 0
2 years ago
When there are more electrons than protons an object has an overall<br> charge.
azamat

Answer:it would have a negative charge because  electrons are negative

Explanation:

7 0
3 years ago
How many atoms of hydrogen are in 0.500 mol of ch3oh molecules?
cestrela7 [59]
In 1 mol of CH3OH, you have 4 H-atoms (because 3 H-atoms are attached to the C-atom, and one H-atom in the OH group). That means in 0.500 mol of CH3OH, you have 2 H-atoms since it is halved. And then we have Avogadro's constant: 6.02 * 1023.

The question asks for how many hydrogen atoms there are in 0.500 mol CH3OH. Using the numbers that we have (Avogadro's constant and no. of H-atoms), the answer of the question will be something like:

<span>H-atoms in CH3OH = 2 * 6.02 * </span>1023<span> = ~1.2 * 10</span>24

 


8 0
3 years ago
Compare the chemical reactivity of chlorine and bromine. Explain your answer. Thanks in advance
shepuryov [24]

Bromine vs Chlorine | Br vs Cl

 

Halogens are group VII elements in the periodic table, and all are electronegative elements and have the capability to produce -1 anions.

Bromine

Bromine is denoted by the symbol Br. This is in the 4th period of the periodic table between chlorine and iodine halogens. Its electronic configuration is [Ar] 4s2 3d10 4p5. The atomic number of bromine is 35. Its atomic mass is 79.904. Bromine staChlorine is an element in the periodic table which is denoted by Cl.  It is a halogen (17th group) in the 3rd period of the periodic table. The atomic number of chlorine is 17; thus, it has seventeen protons and seventeen electrons. Its electron configuration is written as 1s2 2s2 2p6 3s2 3p5. Since the p sub level should have 6 electrons to obtain the Argon, noble gas electron configuration, chlorine has the ability to attract an electron. ys as a red-brown color liquid at room temperature.

8 0
2 years ago
Other questions:
  • What weather would create the smaller waves?
    7·1 answer
  • What do gamma rays consists of?
    6·2 answers
  • What is the pattern in the charge for elements in each group on the periodic table?
    7·1 answer
  • Please answer ASAP 10 points ​
    8·2 answers
  • Four seasons is a characteristic of the _____.
    5·1 answer
  • Briefly describe how a potentiometric pHmeter works. (Hint: Describe how the pH meter measures the amount of H+ or OH- ions in a
    13·1 answer
  • The pharynx/ larynx/ epiglottis is also part of the digestive system. I dont know which one is it, someone help please​
    15·1 answer
  • How is carbon dioxide released by animals? *
    12·2 answers
  • What is the name of the second halogen ​
    6·1 answer
  • In his explanation of the threshold frequency in the photoelectric effect, Einstein reasoned that the absorbed photon must have
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!