Answer:
True :)
Explanation:
What is the chemical formula of stannic nitride?
Answer:
Stannic nitride, Sn3N4
Explanation:
hello, do you think you know the order of this?
Answer:
1. A
2. B
3. D
4. C
Explanation:
Just trust me. Good luck on your test! (I go to K12 as well.)
Human population growth in and around cities is called??
Answer:
Human populations have tended to increase over time. ... The world population has grown significantly, and our economies have become more industrialized over the past few hundred years, and as a result many more people have moved into cities.
Explanation:
This process is known as urbanization.
The splitting apart of an atom's nucleus is called
Fizzing
Fission
Fusion
Atomic
Answer:
it is option B
(Fission)
hope it helps
If a scientist did an experiment to see how adding sugar to plant water would affect the plant’s growth, what would be the dependent variable
sugar would be a dependent factor
Which two are isotopes of one another?
a. Atoms 1 & 2
b. Atoms 2 & 3
c. Atoms 1 & 3
d. Atoms 1 & 4
Which is an example of a parasite and host relationship?
Answer:
A parasitic relationship is one in which one organism, the parasite, lives off of another organism, the host, harming it and possibly causing death. The parasite lives on or in the body of the host. A few examples of parasites are tapeworms, fleas, and barnacles.
Answer:Tapeworms are a common parasite that can live in humans. They go into the digestive system and get food by eating the hosts partly digested food.
Explanation:
Birds' feet change slowly over time, depending on their habitat. Ptarmigans live in snowy areas and eat pine needles, twigs, and insects. Roadrunners live in deserts and plains and eat anything they can catch. Peregrine falcons live on high perches and use their talons for grasping their prey. Mallards live near water and swim and dive for food.
What is an inherited behavior or physical change that helps an organism survive and reproduce in its environment?
A. adaptation
B. variation
C. evolution
D. species
Answer:
A
Explanation:
HELP!! URGENT!! WILL GIVE BRAINIEST
Answer:
11. Mn (CH 3 CO 2) 2. (H 2 O) n where n = 0, 2, 4.
12. Au2O
Explanation:
Hope this helps
What is the molar ratio between carbon dioxide to water?
2 C4H10 + 13 O2 = 8 CO2 + 10 H2O
Answer:
8:10
Explanation:
The coefficients of a balanced chemical equation give us the mole ratios. The coefficient of carbon dioxide here is 8 and water is 10.
Describe how both genes and the environment can affect the growth of organisms
Answer:
The environment can affect an organisms through natural evolution. Example: Spotted moths camouflage with the bark on trees, but black moths do not. So the black moths are eaten and the spotted moths survive. The white moths then pass on their genes to their offspring, so their offspring will also be spotted. Eventually most moths will be spotted. But when the industrial revolution occured, the bark of the trees changed to a darker colour. Therefore the spotted moths were easily seen by predators and were eaten. But the black moths blended in with the bark so they survived. The black moths then passed on their genes to their offspring so most of the moth population had black wings.
What causes the differences in physical characteristics like hair color among people?
ООО
different versions of genes
O variations in DNA length
different numbers of chromosomes
variations in cell nucleus size
Answer:
The answer is a
Explanation:
According to VSEPR theory, what is the bond angle of CCl4?
a. 90
b. 109.5
c. 120
d. 180
what is the density of a gas at STP that has a molar mass of 50.0 g/mol?
Answer:
2.232 g/L
Explanation:
Assuming 1 mol, volume at STP is 22.4 L so you simply divide 50g by 22.4 L to get density
The density of the given gas is required.
The density of the gas at STP is 2.232 g/L.
M = Molar mass of gas = 50 g/mol
1 mole of any gas at STP occupies 22.4 L.
V = Volume per mole = 22.4 L/mol
Density is given by
[tex]\rho=\dfrac{M}{V}\\\Rightarrow \rho=\dfrac{50}{22.4}\\\Rightarrow \rho=2.232\ \text{g/L}[/tex]
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If the reaction produces 400.0 mL of 1.5 M MgCl2, how many moles of HCl reacted?
(A) 0.30 moles
(B) 0.60 moles
(c1.20 moles
(D) 2.40 moles
The number of moles of HCl produces 400.0 mL of 1.5M MgCl₂ is equal to 1.20 moles. Therefore, option (C) is correct.
What is a mole?A mole can be defined as a standard unit that is used to find a huge number of quantities of molecules, atoms, ions, or other particular particles.
The number of entities in one mole was found to be equal to 6.023 × 10²³ which is called Avogadro’s constant.
The chemical equation of magnesium and HCl is:
Mg (s) + 2HCl (aq) → MgCl₂ (aq) + H₂(g)
The volume of the MgCl₂ solution, V = 400 ml = 0.4 L
The concentration of MgCl₂ = 1.5 M
The number of moles of MgCl₂ = 1.5 × 0.4 = 0.6 moles
One mole of MgCl₂ is produced from HCl = 2
0.6 moles of MgCl₂ is produced from HCl = 2 × 0.6 = 1.20 moles
Therefore, 1.20 moles of HCl will be reacted to produce 0.6 moles of MgCl₂.
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what are cells
1. the smallest things that can carry out life processes
2. parts of a molecule
3. parts of an atom
1.the smallest things that can carry out life proccess
what is name of each shape
Answer:
I am so sorry I do not know this
Explanation:
The student who answers the riddle will get the prize ? underline pronoun
.
answer:
the student who answers the riddle will get the prize
explanation:
who is the pronouna pronoun is something that substitutes for a nounWhat parts of an atom can change during a nuclear reaction that cannot change during a chemical reaction? The number of neutrons and electrons The number fo protons and neutrons The number of electrons only The number of protons and electrons
Answer:
The number of protons and neutrons.
Explanation:
Neutrons and Protons can't be removed from nucleus from chemical reactions because they are held together super strong and tight. However, nuclear reactions are strong enough to separate them.
hope this helps :)
Answer:
The number of protons and neutrons
Explanation:
2. Calculate the [H+] in the following solutions, given their pH, and identify the solution as acidic, basic or neutral.
a) pH = 2.5
b) pH = 11.7
c) pH = 6.8
d) pH = 3.31
Answer:
a) acidic; [H+] = 10^-2.5 = 3 x 10^-3
b) basic; [H+] = 10^-11.7 = 2 x 10^-12
c) slightly acidic (almost neutral); [H+] = 10^-6.8 = 1.6 x 10^-7
d) acidic; [H+] = 10^-3.31 = 4.9 x 10^-4
Explanation:
pH < 7 is acidic; pH > 7 is basic; pH = 7 is neutral
[H+] = 10^-pH
A is acidic, B is basic, C is slightly acidic, and D is acidic.
What is pH?
pH, quantitative measure of the acidity or basicity of aqueous or other liquid solutions.
a) Acidic; [[tex]H^+[/tex]] = [tex]10^-^2^.^5[/tex] = [tex]3 X 10^-^3[/tex]
b) Basic; [[tex]H^+[/tex]] = [tex]10^-^1^1^.^7[/tex] = [tex]2 X 10^-^1^2[/tex]
c) Slightly acidic (almost neutral); [[tex]H^+[/tex]] = [tex]10^-^6^.^8[/tex]= [tex]1.6 X 10^-^7[/tex]
d) Acidic; [[tex]H^+[/tex]] = [tex]10^-^3^.^3^1[/tex]= [tex]4.9 X 10^-^4[/tex]
pH < 7 is acidic; pH > 7 is basic; pH = 7 is neutral
Hence, a is acidic, b is basic, c is slightly acidic, and d is acidic.
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Someone please help me real quick pls :(
Acid reflux occurs when acid from a person's stomach escapes from the stomach and enters the esophagus, a flexible tube that leads into the stomach. Which substance would be best for neutralizing stomach acid?
The substance which will be the best for neutralizing stomach acid is Antacid.
What is Antacid ?Antacids are medications that counteract (neutralize) your stomach's acid to ease heartburn and indigestion.
Heartburn, indigestion, and upset stomach can be treated with antacids, which neutralize stomach acid.
Some antacids have been used to treat diarrhea and constipation. Marketed antacids include sodium, calcium, magnesium, or aluminum salts.
They are available without a prescription from pharmacies and stores and come in liquid or chewable tablet form.
Therefore, The substance which will be the best for neutralizing stomach acid is Antacid.
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plz i need help
eggs:
ranch dressing
windex
Answer:
Egg is heterogeneous.
Ranch Dressing is heterogeneous
Windex is homogeneous.
what is the chemical name for Li2CO2
Answer:
Lithium Carbonite
Explanation:
Answer:
Lithium
Explanation:
From a cross between a short haired guinea pig (hh) and a long haired guinea pig (Hh), what would be the possible phenotypes of the offspring?
A. 100% will have long hair.
OB. 75% will have long hair; 25% will have short hair.
OC. 50% will have long hair; 50% will have short hair.
O D. 25% will have long hair; 75% will have short hair.
The offsprings' traits depend on which parent the offspring inherited more copies of genes from. agree or disagree
Answer: disagree
Explanation:
The gene traits of offsprings depends on the inheritance from parent. There will be some dominants traits as well as recessive traits from parents. Hence the statement is incorrect.
What is inheritance?Inheritance is the biological process of transferring genes from parents to offsprings. Identical daughter cells are produced through cell division. Cell division carries through methods such as mitosis, meiosis, binary division etc.
The genetic traits from parents inherited to the offsprings sometimes be equal from both parents and called the homozygous. Whereas the if the traits transferred is unequal it is referred to as heterozygous.
The trends in inheritance is studied well by Griger Mental, who proposed the punnett square to predict the pattern of genetic traits inherited from parents. Hence, the genetic traits both quantitative and qualitative traits are dependant upon both parents and the environmental factors.
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Which of the following describes an animal that is contributing to the cycling of water in the hydrologic cycle?
OA. A monkey is cooled as sweat evaporates from its skin.
ОВ. A sea anemone lives in a habitat of seawater.
OC. A fish swims upstream in a flowing river.
OD.
A butterfly hides under tall grass during precipitation.
HELPP!!
Answer:
OA.
Explanation:
hydrologic cycle invloves evaporation which the wonkey is doing and when t hat condenses it is turned into water which we drink. So if you think very hard about it every time you drink a glass of water, you could be drinking monkey sweat :)
true or false for this question?
Answer:
False, i think
Explanation:
What particle revolves around the center of the atom? What is its Charge?
Answer:
Electrons, with a charge of -1.
Explanation:
The nucleus of the atom is composed of protons and neutrons.
The nucleus is where the bulk of the mass of an atom is found.
Electrons orbit the nucleus in various energy levels.
Protons have a charge of +1, neutrons have no charge, and electrons have a charge of -1.
NH3+
H2(SO4) =
(NH4)2(SO4)
Balance
Answer:
2 NH3 + H2SO4 = (NH4)2SO4
Explanation:
The reaction type is synthesis
Analyze the given diagram of the carbon cycle below.
An image of carbon cycle is shown. The sun, a cloud, two trees, one towards left and the other towards right, an animal, lake, and a factory are included. Arrow A points from the sun to the left tree. Arrow B points from the air above the clouds to the left tree. Arrow C points from the factory towards the air above the clouds. Arrow D points from the air to the lake labeled Carbonates in Water. Arrow E points from the label Dead Organism under the animal to label Fossils and Fossil Fuels. Arrow F points from the right tree to the air.
Part 1: Which process does arrow F represent?
Part 2: Explain how matter is conserved during the process.
Part 3: Justify why this process is a recycling of carbon in the carbon cycle.
Use complete sentences to explain your answer. (10 points)
Answer:
Part 1:
Arrow F represents Cellular Respiration, showing how the tree produces carbon after it has finished the process of Cellular Respiration.
Part 2:
Matter is conserved in this image because it shows the process of Photosynthesis and cellular respiration. These are both examples of The Law of Conservation of Mass. During both of these processes, the mass of the reactants is the same as the mass of the products.
Part 3:
This process shows the carbon cycle by showing how carbon transfers to many different types of matter and back again. It shows the process of cellular respiration, which produces carbon using the products of photosynthesis, which uses the carbon produced by cellular respiration. This shows a cycle because each of them depends on the other.