Answer:coke
Explanation:
Coke contains more sugar making it more dense
ILL MARK AS BRAINLESS PLS HELP
PLs help mweee Ill mark brainliest
Answer:
I'm pretty sure that it's plate movement...
Question 1 (4 points)
You are given a Stoichiometry word problem with a chemical reaction with reactants and products given below:
2A + B2 --> 2AB
You must find the mass of AB formed with 4 moles of B2.
Q: Which of the following information do you need to have in the correct order to solve the problem?
1. to cancel out moles of B2, you must multiply with a factor that have moles of B2 at the denominator and
moles of AB in the numerator
2. Find mole ratios of B2 and AB to obtain conversion factors
3. to cancel moles of AB, you must multiply with a factor that has 1 mole of AB in the denominator and molar
mass of AB on the numerator.
4. Start solving with the given information (moles of B2) first
5. Balance the equation
How many GRAMS of H2 would you need to produce 2.5 mol NH3?
9
A 75 gram sample of water is initially at 30 degrees Celsius. What would it's temperature be if
it absorbed 2000 J of heat?
Answer:
T2 = 36.38°C
Explanation:
Given data:
Mass of water = 75 g
Initial temperature = 30 °C
Final temperature = ?
Heat absorbed = 2000 J
Solution:
Specific heat capacity of water is 4.18 J/g.°C
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
ΔT = Final temperature - initial temperature
2000 J = 75 g×4.18 J/g.°C × T2- T1
2000 J = 313.5 J/°C × T2- T1
2000 J = 313.5 J/°C × T2 - 30 °C
2000 J / 313.5 J/°C = T2 - 30 °C
6.38 °C = T2 - 30 °C
T2 = 6.38 °C + 30°C
T2 = 36.38°C
If the density is 0.9g/cm3 and the volume is 1.5cm3 ? What is the Mass?
Answer:
1.35g
Explanation:
times the density and volume together to get the mass
0.9 x 1.5 = 1.35g
An atom has 9 protons and 7 electrons. What is its overall charge?
Answer:
Positive
Explanation:
If an atom has more protons than electrons, its overall charge will be positive. Protons have a positive charge, electrons have a negative charge.
What does evaporation do to salinity? Question 2 options: water molecules (H20) absorb energy where there are higher levels of evaporation, the water has greater salinity warmer water molecules move farther apart it does not impact salinity
Answer:
the water has greater salinity
Explanation:
The term "Salinity" refers to the amount of salt present in water. Recall that the amount of solute increases when the volume of solution decreases. This is because the amount of substance present in a solution depends on the volume of the solution.
Hence, as water evaporates, the volume of the solution decreases and the salinity (amount of salt present) increases.
Answer:
the water has greater salinity
Explanation:
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find the one out of place
Two siblings express different eye colors. The brother has brown eyes but the sister has blue eyes. Which statement explains why the siblings express different eye color? *
The brother received genes only from his father, and the sister received genes only from her mother.
The siblings each received a different combination of genetic information from their parents.
The brother received fewer genes from his other than his sister received.
Answer:
The siblings each received a different combination of genetic information from their parents.
Explanation:
Atoms of which two elements have a combined total of 23 protons?
A.Sodium, Na, and magnesium, Mg
B.Boron, B, and carbon, C
C.Copper, Cu, and zinc, Zn
D.None of these
Answer:
A
Explanation:
Sodium has 11 electrons and Magnesium has 12 electrons. Since here you need to consider atoms, they must have equal amount of protons as electrons to be considered neutral, and so an atom.
So simply 11+12 =23
1. OBJECT A HAS A TEMPERATURE OF 78K AND OBJECT B HAS A
TEMPERATURE OF 125K. HOW DOES HEAT FLOW? What happens to the
temperature of each object?
Answer:
The law of heat conduction, also known as Fourier's law, states that the time rate of heat transfer through a material is proportional to the negative gradient in the temperature. As the temperature difference is bigger, the rate of temperature change will be bigger.
Explonation:
sorry if doesnt
help
How do I know if hand soap is working properly and how are some methods I can test it?
Answer:
Part A) By seeing if your hands are clean and dont have germs
Part B) Dip your hands in mud and then wash your hands to see results
Explanation:
Car 1 has a body made from aluminium and car 2 has a body made from steel. Which car is likely to
have the better fuel economy?
Answer:
1
Explanation:
Um well if a car is made out aluminum keep in mind the engine = heat and stuff the type of stuff that would burn would cause chemicals/ white flame to form the trioxide aluminum(lll) oxide, Al small 2 O small 3. With Steel this would burn off bits of rust/ion oxide
I could be wrong but thats the best answer i can give sorry mate
Calculate the number of moles found in 88.02g of CO2
Answer:
2.00moles
Explanation:
mol=mass/mr
88.02/ [12+2(16)] = 2.00
Can someone help me answer this ASAP !!!
Answer: Chlorine I think
Explanation:
Chlorine is added to the water to kill germs. When it is added to a swimming pool, it forms a weak acid called hypochlorous acid that kills bacteria like salmonella and E.
Answer: Chlorine!
Explanation:
When it is added to a swimming pool, it forms a weak acid called hypochlorous acid that kills bacteria like salmonella and E. coli, as well as germs that cause viruses such as diarrhea and swimmer's ear.
(7th grade science question)
In baking and science, do you think it is better to measure loose solids (like flour or sugar) by volume or mass? Why?
Answer:
id say mass
Explanation:
but i d k
what is the full name of the compund CuSO4?
Please can you help me? (✿◡‿◡)
CuSO4 is Copper Sulphate.
Can someone help me with these?
How does the FDA regulate the animals?
Compare cloned animals to genetically engineered animals using recombinant DNA.
What is AquAdvantage Salmon? What is its purpose?
What is an Oxitec mosquito? What is its purpose?
Identify a minimum of three benefits and risks associated with genetically engineered animals.
What type of ethical issues are involved with the genetic engineering of animals?
Check answer here hope it helps
Which elements have similar chemical properties?
a) Na, K, Mg
b) B, Al, S
c) N, O, F
d) He, Ar, Kr
Answer:
d) He, Ar, Kr
Explanation:
To have similar chemical properties, elements must belong to the same period on the periodic table.
As a generally periodic trend, elements within the same group, have the same chemical properties.
So, the correct answer choice will draft elements from the same group.
He, Ar and Kr belongs to the group of elements called the noble gases. They are an unreactive group of elements. They are found in the last group on the periodic table. These elements do not readily combine with other elements.Answer:
D
Explanation:
Please help fast! I will give brainliest!
Answer:(c)
Explanation:
i need help please this is due today
Select all the correct answers.
Joshua dissolved sugar in water to create a sugar solution. His friend Ray tells him it’s a compound, but Joshua corrects him. Which words actually describe the sugar solution?
gas
liquid
mixture
solid
Answer:
liquid and mixure
1. Electronegativities of the elements Be, Mg, Ca, and Sr follow a specific trend within their group. Based on this trend, the atoms of which element will have the least attraction for an electron?
A) Be.
B) Mg.
C) Ca.
D) Sr.
2. Which element has a larger atomic radius than sulfur?
A) Chlorine.
B) Cadmium.
C) Fluorine.
D) Oxygen.
3. Which ion was formed by providing the second ionization energy to remove an electron?
A) Ca2+.
B) N3–.
C) Fe3+.
D) S2–.
4. The most negative electron affinity is most likely associated with which type of atoms?
A) Large nonmetal atoms.
B) Small nonmetal atoms.
C) Large metal atoms.
D) Small metal atoms.
5. Selected properties of antimony (Sb) and iodine (I) are listed in the table below.
Element AtomRadius(pm) 1st IonEnergy(kJ/mol) ElectroAffinity(kJ/mol) Electronegative
Sb 145 ? –103 2.05
I 140 1008 –295 ?
Which predictions can most likely be made?
Sb has a lower ionization energy but a higher electronegativity than I.
Sb has a higher ionization energy but a lower electronegativity than I.
Sb has a lower ionization energy and a lower electronegativity than I.
Sb has a higher ionization energy and a higher electronegativity than I.
6. Which correctly summarizes the trend in electron affinity?
A) It tends to be very high for group 2.
B) It tends to be more negative across a period.
C) It tends to remain the same across periods.
D) It tends to be more negative down a group.
7. Which explains the change in ionization energy that occurs between removing the first and second electrons from an atom?
A) The ionization energy decreases because the ratio of the protons to electrons increases.
B) The ionization energy increases because the ratio of the protons to electrons increases.
C) The ionization energy decreases because the ratio of the protons to electrons decreases.
D) The ionization energy increases because the ratio of the protons to electrons decreases.
8. Which element would most likely have an electron affinity measuring closest to zero?
A) Na.
B) Al.
C) Rb.
D) Ar.
9. Electronegativities of the elements Na, Al, P, and Cl follow a specific trend across the period. Based on this trend, an electron will be most strongly attracted to
A) Na.
B) Al.
C) P.
D) Cl.
10. Which best describes ionization energy?
A) Energy needed to add an electron to a neutral atom in the gas phase.
B) Energy needed to add an electron to a neutral atom in the liquid phase.
C) Energy needed to remove an electron from an atom or ion in the gas phase.
D) Energy needed to remove an electron from an atom or ion in the liquid phase.
Answer: B D B A C B E D A B
Explanation:
Problems 4-6 convert the measurements into moles.
4. 9.03 x1023 C atoms
5. 2.44x1023 H2O molecules
6. 6.02x1023 Li atoms
Answer:
4. 1.5moles
5. 0.405moles
6. 1 mol
Explanation:
To find the number of moles in each susbtance in this question, we divide each number of atom/molecule measurement by Avagadro's number (6.02 × 10^23 atoms)
That is; nA = n × 6.02 × 10^23 atoms
n = nA ÷ 6.02 × 10^23 atoms
Where;
nA = number of atoms
n = number of moles
4.) n of Carbon = 9.03 x 10^23 ÷ 6.02 × 10^23
n = 1.5 × 10^ (23-23)
n = 1.5 × 10^0
n = 1.5 × 1
n = 1.5moles.
5.) n of H2O = 2.44 x 10^23 ÷ 6.02 × 10^23
n = 0.405 × 10^ (23-23)
n = 0.405 × 10^0
n = 0.405moles
6.) n of lithium = 6.02 x 10^23 Li atoms ÷ 6.02 × 10^23
n = 1 × 10^ (23-23)
n = 1 × 10^0
n = 1 mol
The pedigree diagram shows how a dominant trait is inherited in a family. The red circle and squares show family members with the trait. Based on the pedigree diagram, who must be heterozygous for the trait? A. The child with the trait B. The child without the trait C. Only one parent D. Both parents
Answer:
D
Explanation:
Correct on A P E X
The specific heat capacity of copper is 0.385 J/(gK). If 353 J of heat are added to 3.6 moles of copper at 283 K, what is the final temperature of the sample of copper?
Answer:
287K
Explanation:
To find the increasing in temperature for the sample of copper we must use the equation:
Q = m*C*ΔT
Q is the heat added (353J)
m is the mass of copper (3.6mol * (63.546g / mol) = 228.8g
C is specific heat (0.385J/(gK))
And ΔT is the increasing in temperature.
Solving for ΔT:
Q / m*C = ΔT
353J /228.8g*0.385J/(gK) = 4.0K
That means the final temperature of copper is:
283K + 4K =
287KWhich of the following statements is true? Chemical reactions are the same as atomic reactions. The sun uses nuclear fusion reactions to generate heat. Nuclear power can't be used to do beneficial work. Nuclear fission is more dangerous than nuclear fusion.
Answer:
The sun uses nuclear fusion reactions to generate heat.
Explanation:
It is true from the given choices that the sun uses nuclear fusion reactions to generate heat.
The heat that accompanies nuclear fusion reactions is very huge. In fact this is the source of energy for the whole solar system.
During a nuclear fusion reaction, small atomic nuclei combines to form larger ones.
This combination results in a series of chain reactions that releases energy.
1. If a cell has waste it needs to store, it will store it:
Do you think that it is necessary and/or important to take a multivitamin everyday to maintain optimal health? What might help you answer this question? What types of things might influence your decision to take a multivitamin every day?
What's ur opinion with explanation???????!!!!!!!!!!
What are polyatomic ions and how are they formed?
Answer:
Polyatomic ions are covalently bonded groups of atoms with a positive or negative charge caused by the formation of an ionic bond with another ion. Compounds formed from such ion combinations are called polyatomic ionic compounds, but the polyatomic ion behaves as a single uni
Explanation: