laboratory safety rules:
~Avoid wye contact with all chemics
~ Avoid skin contact with all chemicals
~Always wear safety glasses
~Don't eat in the lab
~Don't drink anything in the lab
~Avoid wearing jewellery
~Don't taste or sniff any chemicals
~Kn0w emergency exit routes
~Never leave containers of chemicals open
~Avoid distracting anyone else working in the lab
Hope this helped you- have a good day bro cya)
write and balance sodium when it burns in air to form sodium peroxide
Answer:7.229 grams of oxygen is formed by the complete reaction of 35.23 g of metallic sodium with oxygen at 130–200 °C, a process that generates sodium oxide, which in a separate stage absorbs oxygen: 4 Na + O2 → 2 Na2O. The ozone oxidizes the sodium to form sodium peroxide.
Someone pls help me I will make you brain
Answer:
it is c greenhouse effect please mark me brainliest
Explanation:
Answer:
green house effect
Explanation:
The answer is green house effect.
Plants are able to produce special chemicals at the right time and place.
A: True
B: False
help fast my test is almost due
Answer:
true
Explanation:
An atom of an element with atomic number 48 and mass number 120 contains
A. 48 protons, 48 electrons, and 72 neutrons
B. 72 protons, 48 electrons, and 48 neutrons
C. 120 protons, 48 electrons, and 72 neutrons
D. 72 protons, 72 electrons, and 48 neutrons
Option 5
Answer:
a
Explanation:
proton remains same as the atomic number
electron remains same as the atomic number
Mass no.- atomic no. = Neutrons
Would a 5-pound bag of iron nails be as dense as a single iron nail?
Answer:
Yes
Explanation:
Someone pls help me I will make you brain
Answer:
B I and II
Explanation:
warming and melting.
please mark me brainliest
The system containing all the muscles of the body especially those involved in movement CONSIST of the three types of muscle skeletal smooth and cardiac
Please help. Thank you!
what is the electron configuration of uranium at its ground state (in order) AND noble gas configuration?
Answer: Uranium is a chemical element with atomic number 92 which means there are 92 protons and 92 electrons in the atomic structure. The chemical symbol for Uranium is U. Electron configuration of Uranium is [Rn] 5f3 6d1 7s2. Possible oxidation states are +3,4,5,6.
Explanation:
Answer:
Electron configuration of uranium at its ground state: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6s6 5f3 6d1 7s2
Noble gas configuration: [Rn] 5f3 6d1 7s2.
yall help, i missed like a week
some of them are wrong, I need all of 1 and 2
Answer:
a. Azane
b. sulphur hexachloride
c.carbon tetrachloride
d. Carbon disulfide
e.Umbelliferone
f.Disilicon hexabromide
g. Dinitrogen trifluoride
h.
Which chemical family below would the element iodine most likely belong to?
Family D
Family C
Family A
Family B
Answer:
it is option A
Explanation:
Best of luck in whatever you are doing
Each component retains its own properties in a mixture.
true or false
Answer:
No it's false actually it's two or more components
Hope it helps :-):-)
Answer:false
Explanation:
Suppose a high-flying jumbo jet with a mass of 45,000 kg cruises at constant velocity when the thrust of its engine is a constant 80,000 N. What is the acceleration of the jet?
Answer:
1.78 m/s²Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
[tex]a = \frac{f}{m} \\ [/tex]
f is the force
m is the mass
From the question we have
[tex]a = \frac{80000}{45000} = \frac{80}{45} \\ = 1.77777...[/tex]
We have the final answer as
1.78 m/s²Hope this helps you
In an experiment combining vinegar and baking soda, gas is given off. In this
chemical reaction, the vinegar and baking soda are…
A elements
B products
C suspensions
D reactants
Answer:
The correct answer is D hope this helped :3Answer:
(D)
Explanation:
In the reaction between vinegar and baking soda, the reactants are vinegar (acetic acid) and baking soda (sodium bicarbonate). The products are sodium acetate, water, and carbon dioxide gas.
Someone pls help me I will make you brain
Answer:
the answer is A for this question
14. An atom has 10 protons, 8 electrons, and 7 neutrons. What is the charge of the
atom and what type of ion is it?
The charge on an atom = # of protons - # of electrons
= 10 - 8
= +2
∴ the atom is a CATION (ion) of +2 charge.
HAAAAAALP MEEEEEEEEEEE
Answer:
It would contain 10.
Explanation:
The atomic number: the number of protons.
What chemical compound is produced as a result of photosynthesis?
a
Answer: Specifically, plants use energy from sunlight to react carbon dioxide and water to produce sugar (glucose) and oxygen.
Explanation:
Please answer quickly
Answer:
a) II and III
is the correct
Which of these statements is false?
A. Electrons have a negative charge
B. Electrons have a mass of 1 amu
C. The nucleus of an atom is positively charged
D. The neutron is found in the nucleus of an atom
Answer:
The answer is b
Explanation:
Hope it helps
b) electrons have a mass of 1 amu
electrons have a mass of 0 amu
What is a paper clip, a colloid? solution? or a suspension?
Answer:
I'm gonna guess it's a suspension
Explanation:
let me know if I'm wrong
______Is analyzed by qualitative methods
A. The identify of the poison used in a murder.
B. The amount of poison used in a murder.
C. The location of the poison used in a murder.
D. The method used by the suspect to kill the person.
Answer:
A. The identify of the poison used in a murder.
Explanation:
who is considered the father of the periodic table
Answer:
Dmitri Mendeleev
Explanation:
wants to help?
it's agriculture science not chemistry
Answer:
the jamaians need food to survive
Explanation:
why do garden manure and compost fertilize the soil
gardens arent real the government is lying the world is a simulation
As the soil absorbs manure, nutrients are released. This enriches the soil, which in turn helps the plants. The most important benefit of using manure in the garden is its ability to condition the soil For instance, mixing manure with sandy soils helps to retain moisture levels.
NO2 is a reddish brown color while N2O4 is colorless. Based on this information only, which type of spectroscopy would be a good choice to determine the identity of an unknown sample that contains either
NO2 or N2O4?
Spectroscopy is is an area of science that deals with interaction of matter and the electromagnetic spectrum. Colorimetry can distinguish between a colorless and a colored substance.
The type of spectroscopy that would be a good choice to determine the identity of an unknown sample is a type of spectroscopy that deal with the interaction of visible light with matter.
A type of spectroscopy that deals with interaction of visible light with matter is colorimetry. Colorimetry can measure the concentration of a substance as a function of the amount of light that is absorbed by the substance.
Since NO2 has a reddish brown color, its concentration can be measured using colorimetry. The concentration of N2O4 can not be measured using colorimetry because it is colorless.
Learn more: https://brainly.com/question/14368034
help plssssssssssssssss??
Answer:
Chemical properties, such as combustibility, are generally observed as the identity of a substance changes and one or more new substances form.
Explanation:
Chemical change involves formation of new substances. Therefore, the correct answer is "Chemical properties, such as combustibility, are generally observed as the identity of a substance changes and one or more new substances form."
Help meeeeeeeeeeeeeee
Answer:
Copper = Cu
Gold = Ag
Iron = Fe
Potassium = K
What is the main idea of science? (states of matter)
Answer:
STATES OF MATTER AREliquid statesolid stategaseous stateIf a proton is added to the nucleus of germaium what out comes would acure
If you increase the force on an object, its acceleration increases. True or false
Answer:
true
Explanation:
from Newton's second law of motion ,we can understand that acceleration of a body is directly proportional to the force applied on it and inversely proportional to its mass ,so as the force applied increase,the acceleration also increases