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
adelina 88 [10]
4 years ago
7

(+1)+(-1)=|| (2)+(-2) = 0 20+1) + (-2) = _ (+3) + 3(-1)= 37+2) + 2-3] =

Chemistry
1 answer:
larisa86 [58]4 years ago
6 0
  • 1+(-1)=0
  • 2+(-2)=0
  • 20+1+(-2)=19
  • 3+3(-1)=0
  • 37+2+2-3=38
You might be interested in
Which level of organization in the classification system is directly above the genus level?
podryga [215]

Answer:

The answer is Phylum

Explanation:

the level of organization in the classification system that is directly above the level of "class" is the "phylum".

7 0
3 years ago
Read 2 more answers
how do scientists apply emission spectra to investigate the chemical composition of stars. 1 page long essay.
BARSIC [14]

Scientists use a spectroscope to receive the image of a spectra of light coming from faraway stars. Spectra is sometimes considered to be the fingerprint of the elements, with each elements having different spectra.

Explanation:

They do this by examining the spectrum of light from a star. When an ingredient is inspired, it gives off the light in distinct wavelengths, or colors.

The spectra of the Sun and stars presented bright and dark lines called Fraunhofer lines. Those were shown to be generated by elements transmitting or receiving light at specific wavelengths. Because each element emits or absorbs light only at specific wavelengths, the chemical distribution of stars can be resolved.

6 0
4 years ago
Read 2 more answers
Which is true of cell differentiation?
SSSSS [86.1K]

Answer:

B

Explanation:

When stem cells differentiate, they are different (almost like mutation).

8 0
3 years ago
Read 2 more answers
1. Stan walk 15 km west to the grocery store he shops then walk back 20km east to his house what distance did he cover what was
vitfil [10]

Answer:

His displacement is 0 km because he ends his walk where he started. The total distance of his walk is 20 km because he walks 10 km to the store + 10km back home.

Explanation:

Hope this helps:)

5 0
3 years ago
Magnesium oxide decomposes into magnesium and oxygen. if 12.09 g of magnesium oxide decomposes to form 7.29 g of magnesium, what
Vlada [557]
 the mass of oxy gas would be 4.03 did i calculate that right?
8 0
4 years ago
Other questions:
  • On the graph, indicate the average kinetic energy of the population at T1 and T2.
    12·1 answer
  • Correctly identify the steps and elements in this bacteriophage plaque assay
    14·2 answers
  • What is 3.311 x 10^24 in 2 sig figs?
    13·1 answer
  • How many grams of magnesium contain 4.80 x 10^25 atoms of magnesium
    9·1 answer
  • Element used to make first atomic bomb
    10·1 answer
  • 11. The oxyfuel flame was used for fusion welding as early as the first half of the
    11·1 answer
  • A sampling of 30 million particles coming from an exhaust vent contained 60 sulfur dioxide molecules. What is another way of exp
    8·1 answer
  • propose a synthetic route for the synthesis of a named alkanal starting with ethyl formate and grignard reagent. ​
    6·1 answer
  • Categorize the following reaction: CH4 + O2 ---> CO2 + H2O *
    6·1 answer
  • What do molecules put together form?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!