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
dusya [7]
3 years ago
6

Please help me out asap

Chemistry
2 answers:
Anarel [89]3 years ago
7 0

Factory chimney is considered as a point source by US EPA.

So ans is A.


Yuki888 [10]3 years ago
4 0

The photo shows a factory smokestack - it is considered as a point source. So the answer is A.

You might be interested in
What volume of 1.10 M SrCl2 is needed to prepare 525 mL of 5.00 mM SrCl2?
grigory [225]

Answer:- 2.39 mL are required.

Solution:- It's a dilution problem and to solve this type of problems we use the dilution equation:

M_1V_1=M_2V_2

Where, M_1 and M_2 are molarities of concentrated and diluted solutions and V_1 and V_2 are their respective volumes.

M_1 = 1.10M

M_2 = 5.00mM = 0.005M    (since, mM stands for milli molar and M stands for molar. 1M = 1000mM)

V_1 = ?

V_2 = 525 mL

Let's plug in the given values in the formula:

1.10M(V_1)=0.005M(525mL)

V_1=(\frac{0.005M*525mL}{1.10M})

V_1=2.39mL

So, 2.39 mL of 1.10M are needed to make 525 mL of 5.00mM solution.

7 0
3 years ago
The pressure of a gas increases when the temperature _ at constant volume
weqwewe [10]
When it’s warmer so when temperature encreases
7 0
3 years ago
If an atom has 34 electrons, 46 neutrons, and 34 protons, what is its mass number? what is the name of the element?
OleMash [197]
Mass number = protons + neutrons = 34+46 =80

the element with an atomic number of 34 and mass number of 80 is selenium
7 0
3 years ago
85% of what number is 17? EXPLAIN
vitfil [10]

Answer:

85% of 20 is 17

Explanation:

You can multiply 85% and 20 or subtract 85% from 20.

5 0
3 years ago
Chloroform, CHCl3, reacts with chlorine, Cl2, to form carbon tetrachloride, CCl4, and hydrogen chloride, HCl. In an experiment 2
erastovalidia [21]

Answer:

Chloroform= limiting reactant

0.209mol of CCl4 is formed

And 32.186g of CCl4 is formed

Explanation:

The equation of reaction

CHCl3 + Cl2= CCl4 + HCl

From the equation 1 mol of

CHCl3 reacts with 1mol Cl2 to yield 1mol of CCl4

From the question

25g of CHCl3 really with Cl2

Molar mass of CHCl3= 119.5

Molar mass of Cl2 = 71

Hence moles of CHCl3= 25/119.5 = 0.209mol

Moles of Cl2 = 25/71 = 0.352mol

Hence CHCl3 is the limiting reactant

Since 1 mole of CHCl3 gave 1mol of CCl4

It implies that 0.209moles of CHCl3 will also give 0.209mol of CCl4

Mass of CCl4 formed = moles× molar mass= 0.209×154= 32.186g

6 0
3 years ago
Other questions:
  • How many moles of glucose (C6H12O6) are in 1.5 liters of a 4.5 M C6H12O6 solution
    12·1 answer
  • At 9:00 a.m. Monday morning, Thomas fills a beaker with water and places it in the corner of the classroom. At 1:00 p.m. on Tues
    14·2 answers
  • A voltaic cell utilizes the following reaction: 4Fe2+(aq)+O2(g)+4H+(aq)→4Fe3+(aq)+2H2O(l).
    5·1 answer
  • The following reaction was carried out in a 3.25 L reaction vessel at 1100 K:
    10·1 answer
  • How many moles are in 19.6 g of Sodium (Na)? And the conversion factor?
    14·1 answer
  • Anne is trying to attract her metal pencil box with a magnet from the other side
    12·1 answer
  • Water H20, is made up of different elements, hydrogen and oxygen. Is this type of combination a mixture or pure substance?
    6·1 answer
  • A student made peanut butter bars by pressing a layer of graham cracker crumbs into a baking pan. Next, the student added a laye
    13·2 answers
  • An energy bill indicates that the customer used 1024 kWh in July. How many joules did the customer use?
    7·1 answer
  • Working principles of lithium/solid electrolytes batteries​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!