Answer:
The substance (or substances) initially involved in a chemical reaction are called reactants or reagents.
Explanation:
Answer:
The chemical or substances used to start a reaction are called reactants.
hello can anyone pls help question in picture thx
Explanation:
Chlorine is a non metal so covalent bond. KBr has K metal and Br non metal of opp. charges so ionic bond. Na is a metal so ionic bond. NaCl has Na as metal and Cl as a non metal so ionic bond.
D is incorrect
Explain what a product is
Answer:
an article or substance that is manufactured or refined for sale. or a thing or person that is the result of an action or process.
Explanation:
Answer:
product is the item offered for sale. A product can be a service or an item. It can be physical or in virtual or cyber form. Every product is made at a cost and each is sold at a price. The price that can be charged depends on the market, the quality, the marketing and the segment that is targeted.
the mass number for an atom is numerically equal to which quantity
Answer:
The mass number of an atom is equal to the number of protons plus the number of neutrons that it contains. In other words, the number of neutrons in an atom is its mass number minus its atomic number.
Explanation:
protons
The mass number of an atom is its total number of protons and neutrons. Atoms of different elements usually have different mass numbers , but they can be the same. For example, the mass number of argon atoms and calcium atoms can both be 40.
The stratosphere is cold except in its upper regions where _____ is located.
Question 6 options:
Oxygen
ozone
space
Nitrogen
[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
The stratosphere is cold except in its upper regions where Ozone is located.
Polonium has a mass number of 212 and an atomic number of 84. In a balanced nuclear reaction, polonium releases an alpha particle to produce lead. Which option is the atomic number of lead?(1 point)
210
208
80
82
plss help
right answer only
Answer:
D. 82
Explanation:
Answer:
see below
Explanation:
1. 138
2. the conversion of an atom of one element into a different element through nuclear changes
3. A nuclear equation is balanced according to mass number. A chemical equation is balanced according to the total mass before and after the change.
4. 82
5. Some of the matter is converted to energy.
[quizlet: captncrun]
Dãy các chất tác dụng được với dung dịch HCl loãng tạo thành sản phẩm có chất khí
A.BảO,FE,CaCO3 B.Al,MgO,KOH
C.Na2SO3,CaCO3,Zn D.Zn,Fe2O3,Na2So3
3. How does
photosynthesis affect
your daily life?
Answer:
to create oxygen and energy in the form of sugar
Explanation:
photosynthesis is the process by which plants use sunlight, water, and carbon dioxide
PLEASE HELP i have medical issues and i am behind
Only one of the following is a characteristic of a heterogeneous mixture
a. composition is uniform throughout the mixture
b. contains two or more phrases
c. is a pure substance
d. the mixture composition is always the same
Answer:
b contains 2 or more phases
matter is passed down from the living part of an ecosystem to the non living part when witch of the following take place ?
Minerals have:
A. an exact chemical composition, such as SiO2.
B. a small range in chemical composition, such as (Mg, Fe)2SiO4
C. a large range in chemical composition, such as (Mg, Fe, Al, K, Na)2SiO4
D. no set chemical composition.
Answer:
B
Explanation:
i don't know minerals a good for the body
how might you separate a mixture of water and salt?
Answer:
by evaporating the solution leaving the solute (salt) behind after the solvent has evaporated
I will brainless who can answer this all pleaseeeeej
Answer:
Red, Orange. Yellow, Green, Blue, Indigo, and Violet.
Explanation:
the answer is the colors of the rainbow
ENT
Which of the following is one of Mendel's laws?
Law of Independent Assortment
ouTube
Law of DNA contains genes
Law of Segregation of Genes
Answer:
law of independent assortment
what is the weight of the ethil alcohol that exactly falls a 200 .0 mL container ? the density of ethyl alcohol is 0.789 g/mL
Answer:
158 grams
Explanation:
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¿Estás de acuerdo con que las industrias petroleas exploten petróleo en zonas de reservas naturales?
Answer:
si estoy de acuerdo cien por ciento
Choose the best
1. Aliquid is a form of matter that:
a flows,
b. is easily compressed.
c. has no definite volume.
d. has a definite shape.
Answer:
d. has a definite shape.
Explanation:
Bromine, a liquid at room temperature, has a boiling point of 58°C and a melting point of -7.2°C. Bromine can be
classified as a
Answer:
Selenium
adadadadad
Explanation:
if u ask which group
so it is halogen
or u ask which type of matter
then liquid
An unknown material has a mass of 4.5 g and a volume of
6.75 cm3. What is the density
Answer:
0.67 cm³Explanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass = 4.5 g
volume = 6.75 cm³
We have
[tex]density = \frac{4.5}{6.75} \\ = 0.6666666...[/tex]
We have the final answer as
0.67 cm³Hope this helps you
The correct answer is "Greater at 72 °F " hope it helps
1
16. What biological concept was Mendel studying when he crossed pea plants many times
over many generations?
A dominant and recessive traits
B. imbalance in ecosystems
C. predator-prey relationships
D. male and female genetic difference
Answer:
Explanation:
A: Since the Pea plant matured very quickly he was able to identify how the dominant and recessive genes worked.
What does the atoms of metals have
Answer:
I dont know
Explanation:
because I dont know
rutherford called the region that deflected alpha particles
Answer:
Rutherford concluded that these particles were striking... a tiny region of positive charge. Rutherford called the region that deflected alpha particles... a nucleus. The total volume of the nucleus of an atom is... very small compared with the rest of the atom. Except for in the simplist type fo hydrogen atom, all nuclei consist of...
Explanation:
label the particles, charges, & mass for Elements: 6, 8 & 10?
Answer:
charges, & mass
Explanation:
classify these diatomic molecules as diamagnetic or paramagnetic.
20.What is it called when particles in a solid or liquid move slower and closer
together?
Answer: freezing
Explanation:
when the atoms or molecules in a solid or liquid are moving slower and closer together, it is called brrrrrrrrr freezinf
which element has a larger atomic radius than sulfur?
Which substance tends to form anions when bonding with other elements?
oxygen
calcium
argon
sodium
Answer:
A) Oxygen
Explanation:
i just took the test.
Just need to make sure if this is right
Answer:
yeah think that’s correct
Explanation:
not exactly sure how to explain this, I just know that it’ll prolly just stay the same and not move to any high and low regions of the cell
If a cell has 4 chromosomes at the beginning of meiosis, how many chromosomes will be in each cell at the end of meiosis?
Answer:2. Mitosis would produce identical daughter cells with the same number as the parent cell. Meiosis would product sex cells with one-half the amount of genetic material as the parent cells.
Explanation:
If a cell has 4 chromosomes at the beginning of meiosis then the daughter cell will have TWO chromosomes at the end of meiosis.
Meiosis is a type of reductional cell division by which a parental cell duplicates its genetic material (DNA) and then divides twice to produce four (4) daughter cells having half of the genetic material.These successive cell division cycles are known as Meiosis I and Meiosis II.Meiosis is a sexual mode of reproduction that produces gametes or geminal cells, which fuse during the process of fertilization to form a zygote.
In conclusion, if a cell has 4 chromosomes at the beginning of meiosis then the daughter cell will have TWO chromosomes at the end of meiosis.
Learn more in:
https://brainly.com/question/7002092
Someone pls help me I will make you you brain
Answer:
I and II
Explanation:
