Answers
Answer:
I and II
Explanation:
Hope this helps!
Related Questions
Which element most likely has the same number of valence electrons as silicon (Si)?
O germanium (Ge)
O arsenic (As)
O phosphorus (P)
O sulfur (S)
Answers
Answer:
germanium (Ge)
Explanation:
both belong to the same group
Answer:
A. germanium (Ge)
H2SO4 + ………. → ZnSO4 + H2
Answers
Answer:
Zn
Explanation:
H2SO4 + Zn → ZnSO4 + H2
Zn is the answer.
Answer:
H2SO4+Zn =ZnSO4 +H2
this is the answer
calculate the volume of a box with the following dimensions: length=8 cm
width = 6cm and height = 5 cm
Answers
Answer: 240 cm³
Explanation:
Volume of the box = l × w × h
= (8 cm × 6 cm × 5 cm)
= 240 cm³
what is the end-product of the beta-amylase reaction?
Answers
Answer:
maltose
Explanation:
β-amylase is an enzyme found in fungi, bacteria and plants but not in humans. Unlike α-amylase, β-amylase can only degrade starch from the non-reducing end of the polymer chain by hydrolysis of the second α-1,4 glycosidic bond. The end product is thus maltose, i.e. two glucose units.
Which of the following elements is an Alkali Metal?
A) Lithium
B) Neon
Fluorine
D Beryllium
Answers
30 g of hydrogen reacts with 120 g of oxygen to form water.How much water is produced?
136.9 g of copper sulfide breaks apart into sulfur and 111.6 g of copper.How much sulfur is produced?
Answers
According to law of conservation of mass.
In a chemical reaction Mass is neither created nor destroyed.
Mass of product =Mass of reactant#1
Mass of water
[tex]\\ \sf\longmapsto 30+120=150g[/tex]
#2
Mass of sulphur:-
[tex]\\ \sf\longmapsto 136.9-111.6=25.3g[/tex]
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.
Answers
Answer:
d. has a definite shape.
Explanation:
what is the percent of phosphorus by mass in phosphoric acid h3po4
Answers
Explanation:
% phosphorus by mass
= (mass of phosphorus ÷ mass of phosphoric acid) × 100%
= (30.974 g/mol ÷ 97.994 g/mol) × 100%
= 31.61 %∴ percent of phosphorus by mass in phosphoric acid 31.61%.Which is not the correct grouping of elements? (Refer to periodic table)
A. Argon, potassium, slicon, strontium
B. Darmstadtum, nickel, piatinum, palladium
C. Barum berrylium, calcium, radium
D. Cesium, hydragon, lithium, sodium
Please help me guys..I need the answer ASAP!..(｡ŏ﹏ŏ)(╥﹏╥)
Answers
The incorrect grouping of elements is Argon, potassium, slicon, strontium.
What is periodic table?Periodic table is a systematic arrangement of chemical elements within the coloums and rowns on the basis of their properties.
In all options given elements belongs from the same group except the first one, beacuse in argon, potassium, silicon & strontium all are present in different groups of periodic table. As argon is present in the 18th group, potassium is present in the 1st group, silicon is present in the 14th group and strontium is present in the 2nd group of the periodic table.
Hence, correct option is (A).
To know more about periodic table, visit the below link:
https://brainly.com/question/10892900
Convert 7,442 fluid Ounces (oz) to liters (L) rounding to 4 sig figs
Answers
Answer:
220.1 litres
Explanation:
7442 ounces to litres is 220.0892.
Rounding it to 4 significant figures will make it 220.1
what conclusions can you draw about how the plasma membrane contributes to the function of the cell as a whole write an evidence based claim. will give brainleist
Answers
Answer:
Plasma membranes have three primary functions: (1) they keep toxic substances out of the cell; (2) they contain receptors and channels that allow specific molecules, such as ions, nutrients, wastes, and metabolic products, that mediate cellular and extracellular activities to pass between organelles and between the cell and the outside environment; and (3) they separate vital but incompatible metabolic processes conducted within organelles
Explanation:
Kinetic energy in the form of moving waves of light or radiation
Answers
Answer:
radiation
Explanation:
Answer:
neither
Explanation:
Kinetic Energy is the physical movement of objects.
Someone pls help me I will make you brain
Answers
Answer:
D, radiation
Explanation:
the sun's heat radiates onto the land, oceans, and surrounding atmosphere, warming them
Density is a ___ that ____ the ____ of an object to its ______
Answers
Answer:
matter , equals , weight , size
Limestral flour (calcium carbonate) is a weak base used for at a few years of intervals Neutralize the acidification that takes place by lakes and woodland. Would not be a good idea that instend Using the stronger base sodium hydroxide and then be able to use a little less amount?
Answers
Answer:
Well, no.
Explanation:
NaOH is a base which is found in soap, and other detergents which gives it the slippery feel, because, it is a really strong base. Applying this to lakes and woodland could make the water and woodland really concentrated which could make them harmful for domestic and industrial use
The atomic mass of hydrogen is 1. How many protons does a hydrogen atom have?
Answers
Read the claim.
Breakfast is an important meal. It jump starts the body’s process of using calories to break down food. Appetite can decrease with age, but going too long without eating causes metabolism to slow down. Current research shows that incorporating legumes such as lentils and chickpeas into meals boosts metabolism for twenty-four hours.
Who might benefit from this claim?
people who have a fast metabolism
stores that sell exercise equipment
people who take vitamin supplements
grocery stores that sell legumes
Answers
Answer:
i think people who take vitamins
Answer:
its d;grocery stores sell legumes
Explanation:
I just took the test
PLEASE HELP! Which rock is an example of a chemical sedimentary rock?
coal
iron ore
shale
sandstone
Answers
Answer:
sandstone
Explanation:
Answer: iron ore
Explanation: The iron ore deposits are found in sedimentary rocks. They are formed by the chemical reaction of iron and oxygen mixed in the marine and fresh water.
can someone help me plz
Answers
Answer:
what do you need help with?
Explanation:
Answer:
Hello brainly user! You did not provide a question for us to help you with! In order for someone to help you, you need to provide the question you are in need of help for. What's your question?
when two or more elements are combined, the substance produced is a:
Answers
A compound is formed when two or more elements are chemically combined.
Ex: [tex]H{2}O[/tex]
A mixture is formed when two or more elements and/or compounds are physically combined.
Ex: [tex]NaCl + H{2}O[/tex]
I will brainless who can answer this all pleaseeeeej
Answers
Answer:
False, True, True, False, False, not sure, True, False, True, True
here u go
3. The substance that is formed or we finish up with are called.
Answers
The colour observed hrainbow during on the lower side of a a sunny rainy day is
Answers
Answer:
..
Explanation:
ASAP PLEASE
What are the rules for naming binary compounds that are formed between nonmetals. Are these compounds ionic compounds or covalent compounds, explain why?
Answers
Answer:
Explanation:Compounds between Nonmetals and Nonmetals
Compounds that consist of a nonmetal bonded to a nonmetal are commonly known as Molecular Compounds, where the element with the positive oxidation state is written first. In many cases, nonmetals form more than one binary compound, so prefixes are used to distinguish them.
# of Atoms 1 2 3 4 5 6 7 8 9 10
Prefixes Mono- Di- Tri- Tetra- Penta- Hexa- Hepta- Octa- Nona- Deca-
the compounds are covalent, not ionic
Arrange the following elements in order of increasing atomic radius.
K, Li, O, Se
Answers
Answer:
Olkgvvyvvbhhhjuj link here
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help please please please please please
Answers
Answer:
wow only six points, you have to amp it up a little
Explanation: because
explain why the yield of grain increases when nitrate-containing fertiliser is added.
Answers
Explanation:
Nitrogen is an essential element for plant growth and development; however, due to environmental pollution, high nitrate concentrations accumulate in the edible parts of these leafy vegetables, particularly if excessive nitrogen fertilizer has been applied. Consuming these crops can harm human health; thus, developing a suitable strategy for the agricultural application of nitrogen fertilizer is important. Organic, inorganic, and liquid fertilizers were utilized in this study to investigate their effect on nitrate concentrations and lettuce growth. The results of this pot experiment show that the total nitrogen concentration in soil and the nitrate concentration in lettuce increased as the amount of nitrogen fertilizer increased. If the recommended amount of inorganic fertilizer (200 kg·N·ha−1) is used as a standard of comparison, lettuce augmented with organic fertilizers (200 kg·N·ha−1) have significantly longer and wider leaves, higher shoot, and lower concentrations of nitrate.
Nitrogen is a critical element for plant growth and development; however, due to environmental pollution, high nitrate concentrations get in the edible regions of these leafy vegetables, particularly if excessive nitrogen fertilizer has been involved.
What are nitrate-containing fertilizer?The main nitrate fertilizers exist as ammonium, sodium, potassium, and calcium salts. Nitrate exists highly reachable and can efficiently travel with water from the soil if there stands excessive rainfall and can get groundwater.
Nitrates in the soil exist as a primary source of nitrogen which is important for plant growth. Under normal conditions, nitrates are transformed to protein in the plant at about identical rates as they exist absorbed into the root system.
Nitrogen is a critical element for plant growth and development; however, due to environmental pollution, high nitrate concentrations get in the edible regions of these leafy vegetables, particularly if excessive nitrogen fertilizer has been involved. Consuming these crops can damage human health; thus, developing a suitable method for the agricultural application of nitrogen fertilizer exists important. Organic, inorganic, and liquid fertilizers existed utilized in this analysis to investigate their impact on nitrate concentrations and lettuce growth. The results of this pot experiment demonstrate that the total nitrogen concentration in soil and the nitrate concentration in lettuce grew as the amount of nitrogen fertilizer increased.
To learn more about fertilizer refer to:
https://brainly.com/question/27205152
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An atom has 21 protons, 24 neutrons, and 18 electrons. Which change will cause the atom to have more negatively charged particles than positively charged particles?
losing two protons
losing four neutrons
gaining three electrons
gaining four electrons
Answers
Answer:
ganar tres electrones
Explanation:
Answer:
gaining three electrons
Aluminum chlorohydrate, al2(oh)5cl, is an active ingredient in some antiperspirants. what is the mass percent of aluminum in this compound?
30.93%
15.26%
39.48%
21.75%
Answers
Explain the relationship between primary, secondary, tertiary consumers, and decomposers
Answers
Answer:
The organisms that consume the primary producers are herbivores: the primary consumers. Secondary consumers are usually carnivores that eat the primary consumers. Tertiary consumers are carnivores that eat other carnivores.