Answers
Related Questions
Name at least two examples of biomass energy sources
Answers
Answer:
two examples are
wood and Ethanol
What is the molar ratio between carbon dioxide to water?
2 C4H10 + 13 O2 = 8 CO2 + 10 H2O
Answers
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.
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?
Answers
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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Human population growth in and around cities is called??
Answers
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.
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!!
Answers
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 :)
How do the melting and boiling points of water compare to that of other molecular compounds of similar molar mass?
Select one:
a. They are both much lower.
b. They are both about the same.
c. The melting point is much lower, while the boiling point is much higher.
d. They are both much higher.
Answers
Answer:
The answer is D.
Explanation:
The melting and boiling points of water compare to that of other molecular compounds of similar molar mass.
c. The melting point is much lower, while the boiling point is much higher.
Melting point of water:The melting point for water is 0 degrees C (32 degrees F). The boiling point of water varies with atmospheric pressure. At lower pressure or higher altitudes, the boiling point is lower. At sea level, pure water boils at 212 °F (100°C). The melting point of water is the temperature at which it changes from solid ice into liquid water.
Thus, the correct option is c.
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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
Answers
1.the smallest things that can carry out life proccess
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
Answers
Answer:
A
Explanation:
According to VSEPR theory, what is the bond angle of CCl4?
a. 90
b. 109.5
c. 120
d. 180
Answers
HELP!! URGENT!! WILL GIVE BRAINIEST
Answers
Answer:
11. Mn (CH 3 CO 2) 2. (H 2 O) n where n = 0, 2, 4.
12. Au2O
Explanation:
Hope this helps
Given 1 cm3 = 1 mL What is the volume in cubic centimeters of a 500 ml beaker? cm3
Answers
Answer:
500 cubic centimeters of water
You need to make 10.0 L of 1.2 M KNO3. What molar ( concentration) would the potassium nitrate solution need to be if you were to use only 2.5 L of it? *
Answers
Answer:
2.5L [NaCl] concentrate needs to be 4.8 Molar solution before dilution to prep 10L of 1.2M KNO₃ solution.
Explanation:
Generally, moles of solute in solution before dilution must equal moles of solute after dilution.
By definition Molarity = moles solute/volume of solution in Liters
=> moles solute = Molarity x Volume (L)
Apply moles before dilution = moles after dilution ...
=> (Molarity X Volume)before dilution = (Molarity X Volume)after dilution
=> (M)(2.5L)before = (1.2M)(10.0L)after
=> Molarity of 2.5L concentrate = (1.2M)(10.0L)/(2.5L) = 4.8 Molar concentrate
A sealed container at 25oC contains a gas at a pressure of 104 kPa. What is the pressure of the gas when it is heated to 225oC?
1. 304 kPa
2. 936 kPa
3. 174 kPa
4. 62.2 kPa
Answers
Answer:
174 kPa
Explanation:
Given that,
Initial temperature, T₁ = 25° C = 25+273 = 298 K
Final temperature, T₂ = 225°C = 225 + 273 = 498 K
Initial pressure, P₁ = 104 kPa
We need to find the new pressure. The relation between the temperature and pressure is given by :
[tex]\dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}[/tex]
So,
[tex]P_2=\dfrac{P_1T_2}{T_1}\\\\P_2=\dfrac{104\times 498}{298}\\\\P_2=173.79\ kPa[/tex]
or
P₂ = 174 kPa
So, the new pressure is 174 kPa.
ILL BRAINLIST U N MARK U 5 STAR BET?!!
I just need to know if Chernobyl and nuclear accidents mean the same thing I'm so confused I think I lost my braincells trying to figure it out does it or does it not give an example
Answers
Answer:
Chernobyl is a nuclear accident.
Explanation:
hope it helps you
what is the chemical name for Li2CO2
Answers
Answer:
Lithium Carbonite
Explanation:
Answer:
Lithium
Explanation:
What is the mass number of the atom shown?
a. 11
b. 18
d. 20
C. 19
Answers
Answer:
Explanation:it is 11
The offsprings' traits depend on which parent the offspring inherited more copies of genes from. agree or disagree
Answers
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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Please help! I don’t have a time limit, so take you’re time!
Answers
Answer:
c. They have similar chemical properties.
Explanation:
Elements in a group (column) of the periodic table will all have the same number of valence electrons. Valence electrons determine a number of an element's chemical properties, which means that elements in the same group will have similar properties. For example, the alkali metals of Group One all have one valence electron and are highly reactive.
Answer:
C they have the same electrons because they are the same organism
f the electron configuration of Li is 2,1 and the electron configuration of Na is 2,8,1, what is the electron configuration of K? (PLEASE BE QUICK)
Answers
Answer:
1s 2s 2p
1s2 2s1
2 1 1
1s2 2s2
The muscular system and the skeletal system work together so the body can do what?
move
pump blood
get oxygen
digest food
Answers
Answer:
Move
Explanation:
The element which has atomic number 17 is considered from... A. Metals B. Non-metals C. Noble gas D. No correct answer Please explain with your answer.
Answers
Answer:
B. Non-metals
Explanation:
The element with the atomic number of 17 is Cl.
Chlorine belongs to the group 7 in the periodic table. It is a non metal.
Correct option: B. Non-metals
Write the product for each synthesis reaction . Balance the chemical equation . a) Be+O 2 Li+Cl 2 c) Mg+N 2 d) Al+Br 2 K+O 2
Answers
Answer:
j,
Explanation:
What is the charge on an ion that has 10
electrons, 12 protons, and 11 neutrons?
a. 1+
b. 2+
C. 1-
d. 2-
Answers
Answer:
1+
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.
Answers
*
Which factor is not involved in the creation of ocean currents?
O The salinity of seawater.
O The unequal heating of the earth
Ships traveling through the ocean
O The rise and fall of ocean tides created by the moon.
Answers
Answer:
Ships traveling through the ocean
hello, do you think you know the order of this?
Answers
Answer:
1. A
2. B
3. D
4. C
Explanation:
Just trust me. Good luck on your test! (I go to K12 as well.)
NH3+
H2(SO4) =
(NH4)2(SO4)
Balance
Answers
Answer:
2 NH3 + H2SO4 = (NH4)2SO4
Explanation:
The reaction type is synthesis
A student is performing experiments on a particular substance. Which
statement is an observation of a chemical property of the substance?
A. It boils.
B. Electricity passes through it.
C. Its viscosity decreases.
D. It reacts with acid
Answers
The statement it reacts with an acid is an observation of a chemical property of the substance.
What is chemical property?A chemical property is a characteristic of a substance that are observed in a chemical reaction. Some major chemical properties include flammability, toxicity, heat of combustion, pH value, rate of radioactive decay and chemical stability.
What is acid?Acid is a substance that gives hydrogen ions (H+) when dissolved in water. Examples of acids are Hydrochloric acid (HCl), Sulphuric acid (H2SO4), Nitric acid (HNO3), carbonic acid (H2CO3)Properties of acids:
Acid is sour in taste.Acid reacts with base to give salt and water.Acid turns blue litmus paper to redWhen acid reacts with carbonates and bicarbonates, carbon dioxide is produced.To learn more about acids here
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What is the mass (in grams) of 5.00 L of NH₃ at STP?
Answers
Answer:
3.79 grams
Explanation:
22.4= STP volume . Molar mass of NH3=17.031
5.00 NH3 × (1 mol/22.4 L) =0.223
convert to grams->
0.223× 17.031= 3.79
According to ideal gas equation and standard temperature and pressure conditions the mass in grams of ammonia is 0.037 g.
What is ideal gas equation?The ideal gas law is a equation which is applicable in a hypothetical state of an ideal gas.It is a combination of Boyle's law, Charle's law,Avogadro's law and Gay-Lussac's law . It is given as, PV=nRT where R= gas constant whose value is 8.314.The law has several limitations.
The law can be derived from microscopic kinetic theory .All the other gas laws equations can be derived from ideal gas equation, In the given example at standard temperature and pressure conditions, P=1 atmosphere
V=5 L , molar mass of ammonia=17.031 g/mole,R=8.314 T=273 K
Substituting all these values in ideal gas equation,
mass=PV×molar mass/RT
mass=1×5×17.031/8.314×273=0.037 g
Thus the mass of ammonia gas in grams at STP is 0.037 g.
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I need help on this question
Answers
Answer:
When a front passes over an area, it means a change in the weather. Many fronts cause weather events such as rain, thunderstorms, gusty winds, and tornadoes. At a cold front, there may be dramatic thunderstorms. At a warm front, there may be low stratus clouds. Usually, the skies clear once the front has passed.
Explanation:
Plz make me brainliest :)
Have a nice day
Answer:
Email your teacher they will give you the answers try it yourself
Explanation: