Answer:
C. 1
Explanation:
Group 1 metals are highly reactive (such as Sodium) and form 1 to 1 ratio of ions with halogens (such as chlorine, bromine etc).
This happens because group 1 element can donate 1 valence electron to fulfill their octet rule and halogens can receive 1 valence electron to fulfill their octet.
Para este mismo ejercicio, si se administran 2.5 litros de está solución (2,500ml) en un intervalo de 24 horas que cantidad en gramos de paciente en un día?
Answer:
Se administran 2500 gramos de solución por día.
Explanation:
Dado
Volumen de la solución = 2,5 litros
Como sabemos 1 litro = 1000 gramos
Por lo tanto, 2.5 litros = 2500 gramos
Se administran 2,5 litros en un intervalo de 24 horas o 1 día.
De ahí que se pueda decir que se administran 2500 gramos de solución al día.
Help me with chemistry! I got this answer wrong , what would be the right one?
Answer:
I probably think it's to achieve a higher energy state
Explanation:
-
Please help with this , it’s very important
Explanation:
a) Cr is acid K is base
b) Ca is base and the other left part is acid
c)Ca is base and F2 is acid
d) NH4 is acid and SO4 is base
list the universities of nepal and explain about one of them.
Answer:
Tribhuvan University is a university in Tribhuvan, Nepal. Tribhuvan University (TU) is a pioneering higher education institution in Nepal, having been founded in 1959. ......
Pokhara University... Kathmandu University...
Purbanchal University is located in Purbanchal, India.
Lumbini Bauddha University (LBU) is a university in Lumbini, Nepal...
Nepal Sanskrit University is a university dedicated to the study of Sanskrit in Nepal.
Midwestern University is a public university in the Midwest...
Nepal Open University is a public university in Nepal.
Explanation:
Which effects would many organisms likely experience if global warming occurs? Check all that apply.
disrupted food webs
increased competition
increased number of glaciers
disrupted life-cycle events
forced relocation
and any MHA fan to
Answer:
Disrupted food webs
increased competition
disrupted life-cycle events
forced relocation
Explanation:
Global warming refers to a gradual rise in the temperature of the earth due to the increase in the concentration of greenhouse gases in the atmosphere which trap infrared radiation close to the earth.
This gradual increase in the temperature of the earth often have devastating effects on the lives of various organisms on earth. These effects include;
Disrupted food webs
increased competition
disrupted life-cycle events
forced relocation
Due to changes that occur in the ecosystem as a result of global warming, many species may be compelled to relocate from place to place. This in turn disrupts food webs and may lead to disruption of life cycle events of the concerned organisms. Decrease in the number of certain populations due to global warming may lead to increased competition among species for food.
An atom of an element contains 12 protons, 12 neutrons, and 12 electrons. This element is in Group A) 1 B) 2 C) 6 D) 18
Answer:
B) 2
Explanation:
This is because the element in discussion is magnesium which has 12 protons and it falls in group 2 (the second column in periodic table)
____is the degree of hotness or coldness of a body or place
An electromagnetic wave has a wavelength of 4000 meters. What is this wave length and scientific notation?
A. 4.0 x 10-3 m
B. 4.0 x 10 3 m
C. 4.0 x 10 2 m
D. 4.0 x 10-2 m
Answer:
Wavelength of electromagnetic wave = 4.0 × 10³
Explanation:
Given:
Wavelength of electromagnetic wave = 4000 meter
Find:
Write, Wavelength of electromagnetic wave into scientific notation
Computation:
Wavelength of electromagnetic wave = 4000 meter
Wavelength of electromagnetic wave = 4.0 × 1,000 meter
Wavelength of electromagnetic wave = 4.0 × 10³
So,
Option "B" is the correct answer to the following question.
How many representative particles are there in 10.43g of sugar (C12H22011)?
Answer:
10.43 / 342 × 6.02 × 10 ^23 = 18.34 × 10^ 21
Formulas for the compounds below.
Sulfur Trioxide
Sodium hydroxide
Sulphur Trioxide = So3
Sodium Hydroxide = NaoH
Answer:
[tex]\huge\boxed{Sulfur \ Trioxide\hookleftarrow}[/tex]
✐ SO3[tex]\huge\boxed{Sodium \ Hydroxide\hookleftarrow}[/tex]
✐ NaOHʰᵒᵖᵉ ⁱᵗ ʰᵉˡᵖˢ
# ꧁❣ RainbowSalt2²2² ࿐
what is chemical bonding?and types of chemical bonding there are?
Answer:
There are three primary types of bonding: ionic, covalent, and metallic. Ionic bonding. Definition: An ionic bond is formed when valence electrons are transferred from one atom to the other to complete the outer electron shell. Example: A typical ionically bonded material is NaCl (Salt).Explanation:
Hope it helps
#CarryOnLearning
conclusion on friendship
Explanation:
Conclusion. A good friendship is very difficult to come across. That is why we should appreciate this divine relationship that is based on understanding and feelings. ... A true friend is one of the most precious possessions that one can have in his life.Hope it's helpful for Yuh bro!!
Answer:
Friendship is, in many respects, a "comfortable" love relationship. Friendships involve as little or as much intimacy as the partners are inclined to express at any given time. Friends are not normally obligated to exchange benefits, but do so in ways that are often so natural as to be unwitting. The ties that bind them are by unfettered mutual consent. In spite of its being so comfortable, in fact because of it, friendship contributes in unique ways .
Why chemical industry important for the nation with its examples.
Explanation:
employment in the country.
economic boom n latest techonology.
less poverty.
more development.
more jobs for people.
increase in exports which will make large profits n will be utilized in the development of country.
GDP per capita will increase.
high standard of living.
Explain why for static electricity to occur between two surfaces that are rubbed against each other, one of the materials has to be an insulator
When two surface come in contact and rub each other a frictional force causing them s deformation and this leads to a voltage giving rise to a static charge.
What is static charge?Static charge is developed within a body temporarily with an induced polarization. These charges are not moving and set into a pole in the material.
When two materials rub against each other in which one is a conductor and other to be an insulator, they will attract by the induced polarization. Rubbing causes the free electrons in the condutor to be transferred towards the insulator.
This will cause a deformation that, the random charges in the material get polarized where the electrons in the insulator will repel to the opposite pol and positive charges will align in a pole close to the condutor.
This charge separation causes the positive pole of the insulator gets attracted into the conductor surface. Hence, there forms a static electricity by the passage of electron.
To find more on static electricity, refer here:
https://brainly.com/question/12791045
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You are given a clear-water solution containing potassium nitrate. How could you determine whether the solution is unsaturated, saturated, or supersaturated?
Answer:
If it is unsaturated, we can dissolve some more amounts of potassium nitrate into it Explanation:
Electrical charge of an alpha particle is,
A. +1
B. +2
C. +3
D. +4
Balance the following equation:
-_MgCO3 → _MgO + __CO2
Answer:
Decomposition
Explanation:
Magnesite = Magnesium Oxide + Carbon Dioxide
Describe wildfires. How is climate change impacting wildfires ?
Answer:
Hey mate.......
Explanation:
This is ur answer......
Climate change has been a key factor in increasing the risk and extent of wildfires in the Western United States. Research shows that changes in climate create warmer, drier conditions. Increased drought, and a longer fire season are boosting these increases in wildfire risk. But global warming has changed some of the underlying variables that make wildfires more or less likely to occur every year. Warmer temperatures increase the likelihood that fires will burn more intensely. They also cause snow to melt sooner, and lead to drier soils, forests, and plants, which act as kindling.
Hope it helps!
Brainliest pls!
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A sample of O2 with an initial temperature of 50.0 oC and a volume of 105 L is cooled to -25 oC. The new pressure is 105.4 kPa and the new volume is 55.0 L. What was the initial pressure of the sample? Show your work, using the G.U.E.S.S. method.
Answer:
71.92 kPa
Explanation:
Using the combined gas law equation;
P1V1/T1 = P2V2/T2
Where;
P1 = initial pressure (kPa)
P2 = final pressure (kPa)
V1 = initial volume (L)
V2 = final volume (L)
T1 = initial temperature (K)
T2 = final temperature (K)
According to the information provided in this question;
T1 = 50°C = 50 + 273 = 323K
V1 = 105L
T2 = -25°C = -25 + 273 = 248K
P2 = 105.4 kPa
P1 = ?
V2 = 55.0 L
Using P1V1/T1 = P2V2/T2
P1 × 105/323 = 105.4 × 55/248
105P1/323 = 5797/248
0.325P1 = 23.375
P1 = 23.375 ÷ 0.325
P1 = 71.92 kPa
What is the molarity when 25.0 g of the compound NaClO3 is placed in 85.0 mL of solution?
Answer: Molarity when 25.0 g of the compound [tex]NaClO_{3}[/tex]is placed in 85.0 mL of solution is 294.12 M.
Explanation:
Given: Mass = 25.0 g
Volume = 85.0 mL (1 mL = 0.001 L) = 0.085 L
Molarity is the number of moles of a substance divided by volume in liter.
Hence, molarity of given solution is calculated as follows.
[tex]Molarity = \frac{mass}{Volume (in L)}[/tex]
Substitute the values into above formula as follows.
[tex]Molarity = \frac{mass}{volume (in L)}\\= \frac{25.0 g}{0.085 L}\\= 294.12 M[/tex]
Thus, we can conclude that molarity when 25.0 g of the compound [tex]NaClO_{3}[/tex]is placed in 85.0 mL of solution is 294.12 M.
How many grams does 2.1
moles of SnF, weigh?
Answer:
289.8g
Explanation:
Using the formula as follows:
mole = mass/molar mass
Molar mass of SnF = 119 + 19
= 138g/mol
Using mole = mass/molar mass
2.1 = mass/138
mass = 2.1 × 138
mass = 289.8g
Does anyone have the chemistry paper 1 higher 2019 mark scheme thank you
no
Explanation:
i simply answered the question
you didnt ask for it you simply asked if i had it
being mad is no use, same with reporting and taking this down
in thoery my answer is correct
so, dont get mad, dot report, dont take this down
this is my protest
Which elements are the transuranium elements? Use the periodic table link from the tools bar to answer the question.
those with atomic numbers from 93 to 118
those with atomic numbers 2, 10, 18, 36, 54, and 86
those with atomic numbers 3, 11, 19, 37, 55, and 87
those with atomic numbers from 89 to 103
Answer:
(A) those with atomic numbers from 93 to 118
Explanation:
got the answer from q**zlet. hope this helps :)
what does the prefix non-represent?
O 9 carbon atoms, only
O 9 carbon atoms and 20 hydrogen atoms
O 9 carbon atoms and 18 hydrogen atoms
O 9 carbon atoms and 16 hydrogen atoms
Answer:
O 9 carbon atoms, only
Explanation:
Prefix: non- simply means 9.
Suffix: -ene means double bond, -yne means triple bond, and -ane means single bonded carbons.
How much energy required to raise the temperature of lead by the same degrees.
Answer:
If a one kilogram block of lead absorbs 2,000 J of energy then the temperature rise will be larger. If 1,000 J of heat is absorbed by a 2 kg block of lead then the temperature of the block doesn't rise as much since the energy is shared between more particles.
Explanation:
what physical and social systems are involved in the service industry
Answer:
Hey mate.....
Explanation:
This is ur answer........
For example, the communications industry includes all of the physical and social systems that produce books, newspapers, magazines, radio and television broadcasts, billboard advertisements, Internet websites, telephones, and telecommunications, such as the GPS.
Hope it helps!
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Question 1
Part A
Describe the sequence of adding ingredients to make the recipe for condensed tomato soup. To mix the ingredients, you have an industrial-sized vat with a capacity of 800 L. You also have the ability to heat what is in the vat and/or stir the vat, both of which require energy and therefore, cost you money. Focus on the fact that the manufacturing process should be time efficient and cost efficient in terms of energy use. Be sure to refer to the solubility charts or graphs that you find for salt and sugar during your research. Finally, presume that the tomato powder has low solubility which is not temperature dependent.
Part B
What changes could be made to optimize the manufacturing process?
Answer:
Part A:
"360 grams of NaCl can be dissolved in 1 L water. So, 2000 grams sugar can be dissolved in 1 L water then we can say that the solubility of salt is lesser in water as to sugar and both heightened by increasing the temperature. If we make a batch of 800 L we can add sugar, 1600 kg at 25 0c. We can add salt is 288 kg at 25 0c and the ingredient tomato is having low solubility."
Read more at Answer.Ya.Guru – https://answer.ya.guru/questions/8061-describe-the-sequence-of-adding-ingredients-to-make-the-recipe.html
Part B:
'Manufacturers can generate new value minimize cost and increase operational stability by focusing on 4 broad areas; Management, Supply Circle, Product Design, and Value Recovery.'
Read more at Answer.Ya.Guru – https://answer.ya.guru/questions/2807911-what-changes-could-be-made-to-optimize-the-manufacturing-process.html
In order to make tomato soup, the salt NaCl is first added, then followed by sugar and finally the tomato powder.
What are the ingredients required in making tomato soup?Tomato soup is made of the following ingredients:
Tomato powder salt, NaClsugarIn order to make tomato soup, the salt NaCl is first added, then followed by sugar. This is to ensure increase in the boiling point of water and to reduce the heating time of the tomato soup.
The solution is heated to induce more dissolution if solute and finally the tomato powder is added.
In order to optimize the manufacturing process, changes should be made in the design, supply and composition of the soup.
Therefore, an optimized manufacturing process will reduce cost of production.
Learn more about tomato soup at: https://brainly.com/question/21475711
PLEASE PLEASE HELP CHEMISTRY
Sulfur (2.56 grams) was burned in a calorimeter with excess 02(g) . The temperature increased from 21.25C to 26.72C. The bomb had a heat capacity of 923 J/C, and the calorimeter contained 815 grams of water
Calculate the heat evolved as the sulfur burned:
Calculate the heat per mole of SO2 formed in the course of the reaction
S(s) + O2 (g) SO2 (g)
Is this an alpha or beta decay?
How do you convert from grabs to moles of a substance
1. Divide by the molar mass
2. Subtract the molar mass
3. Add the molar mass
4. Multiple by the molar mass
PLEASE HELP !!!
The correct question is as follows:
How do you convert from grams to moles of a substance
1. Divide by the molar mass
2. Subtract the molar mass
3. Add the molar mass
4. Multiple by the molar mass
Answer: In order to convert from grams to moles of a substance divide by the molar mass.
Explanation:
The number of moles of a substance is the mass of substance in grams divided by its molar mass.
The formula to calculate moles is as follows.
[tex]Moles = \frac{mass}{molar mass}[/tex]
This means that grams are converted to moles when grams is divided by molar mass.
Thus, we can conclude that in order to convert from grams to moles of a substance divide by the molar mass.