Pls help me I don’t understand it’s for my science class.
Plz check if correct and tell me wether each is element or compound
Answer:
gold - element
nickel- element
products or solutions found at home or in store and their characteristics
Answer:
bruh, just go in your bathroom and look for cleaning products
Explanation:
Can you guys help please?
Answer:
its false
Explanation:
is this a joke. I honestly don't know why you would need help.
what would happen to a gummy bear after soaking for 2 days in distilled water
Answer:
it would expand
Explanation:
the gummy bear would absorb alot of water
Answer:If a gummy bear is soaked in distilled (pure) water for 24 hours, then the gummy bear will increase in size
Explanation:
What does the notation tt mean to geneticists? *
Explain how blocks of the periodic table are related to the electron configuration of an element.
Answer:
that is simple
electronic configuration s,p,d,f
we know that it's represented element
thus block also represented by s,p,d,f
same
Explanation:
that how it's are related are in the periodic table .
Answer:
Explanation:
The electronic configuration of an element is related to its position on the periodic table.
The links are:
the number of circles in the electronic configuration of an element is represented in the periodic table as the period number that element is situated in
the number of electrons in the outermost shell of an element is represented in the periodic table as the group number that element is situated in
the number of electrons in all shells of an element is represented in the periodic table as the element's atomic numbe
When moving across a row in the Periodic Table, which of the following increases?
Complete and balance each of the following equations for gas evolution reactions HCl(aq)+ZnS(s)>
2HCl(aq) + ZnS(s) ⇒ ZnCl₂(aq) + H₂S(g)
Further explanationEqualization of chemical reactions can be done using variables. Steps in equalizing the reaction equation:
1. gives a coefficient on substances involved in the equation of reaction such as a, b, or c, etc. 2. make an equation based on the similarity of the number of atoms where the number of atoms = coefficient × index (subscript) between reactant and product 3. Select the coefficient of the substance with the most complex chemical formula equal to 1Reaction
HCl(aq) + ZnS(s) ⇒ ZnCl₂(aq) + H₂S(g)
1. give equation
aHCl(aq) + bZnS(s) ⇒ ZnCl₂(aq) + cH₂S(g)
2. make an equation
H, left=a, right=2c⇒a=2c(eq 1)
Cl, left=a, right=2⇒a=2⇒c=1(from eq 1)
Zn, left=b, right=1⇒b=1
So the equation :
2HCl(aq) + ZnS(s) ⇒ ZnCl₂(aq) + H₂S(g)
need some help with this
Answer:
Speed
Explanation:
When light waves hit ice, most of them bounce off and radiate back into space. Because of this, ice is best described as which kind of surface? reflective absorbent dense rough
The bouncing back of light waves observed when light waves hit ice and most of them bounce off and radiate back into space is called reflection.
What are light waves?Light waves are a form of waves which produces visible sensitization of the eyes
Light waves have properties of waves such as:
reflection refraction diffractioninterference, etc.When light waves hit ice, most of them bounce off and radiate back into space.
This property of light waves is known as reflection.
Learn more about reflection of light waves at: https://brainly.com/question/1191238
When light waves hit ice, most of them bounce off and radiate back into space, hence, ice is best described as a reflective surface.
What is a Reflective surface?A reflective surface is one which can cause incident light to bounce back (reflection).
According to this question, when light waves hit ice, most of them bounce off and radiate back into space. This means that most of the incident light reflects off the ice surface.
Therefore, the ice surface is best described as a reflective surface.
Learn more about reflection at: https://brainly.com/question/8553652
Write a balanced equation for the following reaction;
potassium metal reacts with nitrogen gas to form potassium nitride
Answer:
6K + N₂ —> 2K₃N
Explanation:
K + N₂ —> K₃N
The above equation can be balanced as illustrated below:
K + N₂ —> K₃N
There are 2 atoms of N on the left side and 1 atom on the right side. It can be balance by putting 2 in front of K₃N as shown below:
K + N₂ —> 2K₃N
There are 6 atoms of K on the right side and 1 atom on the left side. It can be balance by putting 6 in front of K as shown below:
6K + N₂ —> 2K₃N
Now the equation is balanced.
Which is the role of the gall bladder? PLEASE HURRY I WILL MARK YOU BRAINLYEST
A:to provide physical digestion
B:to stored the liquid produce by the liver
C: to make the liquid that is stored in the liver
D: to decrease the chemical digestion
Answer:
The gallbladder is a pear-shaped, hollow structure located under the liver and on the right side of the abdomen. Its primary function is to store and concentrate bile, a yellow-brown digestive enzyme produced by the liver. The gallbladder is part of the biliary tract
Answer:
a.............................
Will mark Brainliest!!! PLEASE HELP
Heeeelp ill give brainlist
What is the empirical formula for N2H6
Answer:
NH4
Explanation:
empirical formula is the ratio of all elements to each other. so
2:6= 1:4
that's why
N1H4 or NH4
which of the following statements is true?
A. A technology society has no impact on the environment.
B. A technology society has a completely positive impact on the environment.
C. A technology society has both a positive and negative impact on the environment
D. A technology society a completely negative impact on the environment.
Please select the best answer from the choices provided
Answer:
C. A technology society has both a positive and negative impact on the environment
Explanation:
We are using up earth's resources but bettering social society!
Have a nice day,
PumpkinSpice1♥
Heeeelp,,, serious answers only pls i dont wanna hear about your love life
Rahul was given iron filings and sulphur powder. He prepared a compound of iron sulphide by heating the components in a china dish. What would be his observation if he adds a few drops of dilute sulphuric acid into the compound?
Answer:
A gas with a rotten egg smell is evolved
Explanation:
When iron fillings and sulphur were heated in the vessel, the following chemical reaction took place;
Fe(s) + S(s) -----> FeS(s)
This is a direct combination reaction.
Subsequently, when dilute H2SO4 is added, the following reaction takes place;
FeS(s) + H2SO4(aq) ------> FeSO4(aq) + H2S(g)
He immediately observes the evolution of a gas with a rotten egg smell.
Be sure to use two (2) sources of information (one source can be your book). In your response, you MUST state your source. Your response should be between 100 and 150 words.
Answer:
^=E9>*t
Explanation:
A teacher wants to figure out the amount of a solution that is needed for a titration experiment in a class lab. The class has 15 students, and each experiment needs 50 mL of solution.
If each student will perform the experiment two times, how many mL of solution will the teacher need for the whole class?
375 mL
750 mL
1500 mL
3000 mL
Answer:
Im sure it's 1500 mL
Explanation:
You would have ti multiply by 15 i think
Answer:
It is C) 1500 mL
Explanation:
It is C) 1500 mL
What is the name for the compound BrCl?
Compound name:
Bromine chloride
Bond type:
Covalent Bond
Reasoning for Bond type:
Formed between nonmetal and nonmetal atoms
Br (Bromine) is a nonmetal. Also, known as a liquid.
Cl (Chlorine) is a nonmetal. Also, know as a gas.
Use this website for more element information:
https://ptable.com/#Properties
Josh is washing glasses with soap and water. He is afraid to
carry the glasses because they are slippery. What might he find in the
kitchen that he could use to keep the glasses from being slippery? Explain.
Josh is washing glasses with soap and water. He is afraid to carry the glasses because they are slippery. Josh could dry them with a towel to keep the glasses from being slippery.
What are glasses ?Glasses are visual eyewear that have lenses fixed in a frame that holds them in front of a person's eyes. The frame often has a bridge over the nose and arms that rest over the ears. Glasses are also known as eyeglasses or spectacles.
The term "glasses" likely originated from the word "spyglass," which was originally used to describe "a pair of eyeglasses" that had to be held up to the eyes in order to be fully effective.
Eyeglasses, often known as glasses or spectacles, are lenses that are mounted in frames and worn in front of the eyes to improve vision or to correct astigmatism, myopia, or hyperopia.
Thus, Josh could dry them with a towel to keep the glasses from being slippery.
To learn more about glasses, follow the link;
https://brainly.com/question/9399000
#SPJ5
explain the coin and feather experiment. what conclusion can be drawn from experiment
In a vacuum, the objects fall at the same rate independent of their respective masses. That means coin and feather both reach the ground at the same time in a vacuum. Larger objects experience more air resistance than smaller objects. Also, the faster an object falls, the more air resistance it encounters.
Note:
hope this helps
schroedinger thought that electrons
Answer:
In Niels Bohr's theory of the atom, electrons absorb and emit radiation of fixed wavelengths when jumping between fixed orbits around a nucleus. The theory provided a good description of the spectrum created by the hydrogen atom, but needed to be developed to suit more complicated atoms and molecules.
Explanation:
Plants and animals can build up or break down rock by increasing weathering, erosion, and
deposition. true or false
Answer:
false
Explanation:
Weathering describes the breaking down or dissolving of rocks and minerals on the surface of the Earth. Water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering.
No of H atoms in 2.43 g of Aspartame(C^14H^18N^2O^5
Is this method CORRECT
Answer:
yes
Explanation:
The length breadth and thickness of a brick is 18cm 8 cm and 5cm respictively find the area of the widest part of rhe brick
Answer:
144cm²
Explanation:
Given dimensions:
Length x breadth x thickness
18cm x 8cm x 5cm
The widest part of this figure will be the face containing the length and the breadth.
The breadth is the width of the figure;
Area of the widest part = length x breadth = 18cm x 8cm = 144cm
The area of the widest part of the figure is 144cm²
6. Classify each compound as ionic or molecular based on its properties.
Substance Melting Point Solubility Conductivity Classification
1 -55 oC poor poor
2 396 oC good good
3 0 oC not tested poor
4 200 oC good good
5 20 oC good poor
Answer:
1. c
2. ionic
3. c
4. ionic
5. alloy or ionic
Explanation:
The compound classification.
The compounds are classified as per several different criteria and one common elements is the specific element that is present this makes it an iconic or a molecular. The presence of the oxides, hydrides, and various atomic groups.
Hence the answer is melting point to conductivity classified as c, iconic, c, iconic, and alloy.
A poor conductor of electricity will have a conductivity classification of c. The 396 good conductors will be iconic and a 0 C not teste will have a conductivity of c. The 200 C of good conductor will be iconic and 20 C of good conductor will be alloy or iconic.Learn more about each compound as.
brainly.com/question/3110085.
What is an inorganic chemical?
A. A chemical that contains carbon atoms
B. A chemical that does not take part in reactions
C.A chemical that makes up living things
D.A chemical that is not from living things
I'd appreciate anyone's help
Answer:
D.A chemical that is not from living things
i need help with chem ????????
Answer:
69
Explanation: