Hydrogen peroxide is commonly used to clean cuts and wounds. Its chemical formula is
H2O2. This compound has _____.
two atoms of hydrogen
three atoms of oxygen
three atoms of hydrogen
one atom of oxygen
Please help, take your time!
Answer:
two atom of hydrogen,two atom of oxygen
Sodium chloride (NaCl) is made from ___ of sodium (Na) and ___ of chlorine (Cl).
Blanks: One Atom and Two Atom
Answer:
one atom, one atom.
Explanation:
Sodium chloride is made from one sodium atom and one chlorine atom.
Sodium has a charge of +1, Chlorine has a charge of -1. These cancel each other out leaving only one atom for both sodium and chlorine.
Describe how the Rube Goldberg device design that you created follows the law of conservation of energy. Be sure to include both parts of the law of conservation of energy in your description.
Each element has a different:
number of protons and electrons
atomic mass and weight
Properties and characteristics
number of neutrons
Please take your time if needed!
Answer:
(C. Properties and characteristics.
Hope this helpos!
Explanation:
The corn crop in an area is prone to infestation by larvae from moths that feed on the cornstalks and ears of corn. The techniques used by two farmers to protect the corn crop are described below.
Technique A: Sprayed his corn crop with an insecticide. The insecticide is known to kill all honeybee, butterfly, and moth larvae.
Technique B: Used a genetically modified variety of corn. The plant produces an insecticide which selectively kills only the moth larvae as it feeds on the corn.
Which technique is likely to have less of an impact on the environment?
Technique B because it may help humans who consume corn to fight bacteria
Technique A because it kills a broader variety of insects to protect the corn
Technique B because it preserves the harmless insects and targets only the moth larvae
Technique A because insecticide use is better for preserving the environment.
Answer:
Its C
Explanation:
Method A puts a type of spray that kills bees plus butterfly's which would make their population decrease. Which isnt helpful and harms the enviroment a lot. Answer A dosent make sense it may be harmful
Answer: c
Explanation:
I took the quiz
The chemical formula for sulfuric acid is H2SO4. In one molecule of sulfuric acid, there are _____.
two atoms of helium
two atoms of oxygen
four atoms of oxygen
four atoms of sulfur oxide
Please help for my summer school, you can take your time (:
Answer:
four atoms of oxygen
Explanation:
two atoms of hydrogen
one sulphur atom
Select all that apply.
Which items are properties of bases?
soapy
sour
bitter
slick
skin damage
Please
Answer:
soapy and bitter
Explanation:
Elements in the same group have _____.
the same number of electron shells
the same number of protons
similar chemical properties
the same number of isotopes
Answer:
Element in the same group have similar chemical properties.
Landon's new toy arrived in the mail covered in foam packing peanuts. The foam packing peanuts have a mass of 30 g and a volume of 60 cm3. What is the density?
2 g/cm3
180 g/cm3
0.5 g/cm3
2
