Answer:
The answer is Catalytic
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Which family of elements always forms ions with a charge of -1 in compounds ?
Answer:
halogens
Explanation:
Answer:
halogens
Explanation:
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How many grams of AgNO3 are needed to prepare a 75.00 mL solution that is 6.5% (m/v)?
Answer:
Volume of AgNO₃ = 4.9 ml (Approx)
Explanation:
Given:
Total solution = 75 ml
Volume of AgNO₃ = 6.5%
Find:
Volume of AgNO₃
Computation:
Volume of AgNO₃ = Total solution x Volume of AgNO₃
Volume of AgNO₃ = 75 x 6.5%
Volume of AgNO₃ = 4.875
Volume of AgNO₃ = 4.9 ml (Approx)
Which best describes a stable binary ionic compound?
A stable binary ionic compound refers to two ions with opposite charges and a net charge of zero.
What is stable binary ionic compound?A compound formed by the combination of two different elements which are present in a fixed ratio by mass are known as binary compounds. The given compounds will be result in the formation of following compounds.
A binary ionic compound contains an ion that is a metal (cation) and an ion that is a nonmetal (anion) so we can conclude that A stable binary ionic compound refers to two ions with opposite charges and a net charge of zero.
Learn more about ionic compound here: https://brainly.com/question/2687188
What is the final volume, in milliliters, when 5.80 mL of 25.0 %(m/v) NaOH solution is diluted to give a 3.50 %(m/v) NaOH solution.
Answer:
41.43 mL
Explanation:
First we calculate the mass of NaOH in the original solution:
25.0 % m/v means that in 100 mL of solution, there are 25 grams of NaOH.This means that in 5.80 mL, we would have (5.80 * 25/100) 1.45 grams of NaOH.Then we calculate the volume of the diluted solution, using the grams of NaOH (that remain the same throughout the dilution process):
1.45 g NaOH * [tex]\frac{100 mL}{3.50gNaOH}[/tex] = 41.43 mLWhy might one type of cell have more mitochondria than another type of cell?
Answer:
Some cells have more mitochondria than others. Your fat cells have many mitochondria because they store a lot of energy. Muscle cells have many mitochondria, which allows them to respond quickly to the need for doing work.
Getting a vaccine is safer than taking medication or undergoing surgery. True or false I
Answer:
True; you really think getting surgery is safer than getting a tiny shot? I think not.
Distance with respect to time
Answer: okay
Explanation:
Answer:
sure
Explanation:
Hypothetical element X has 3 stable isotopes. The relative peak intensities are 79.52 for 180.0 u, 100.0 for 184.0 u, and 82.98 for 186.0 u. What is the average atomic mass for X
Answer:
The relative atomic mass of X is 183.4
Explanation:
The relative atomic mass of an element is the weighted average of the masses of the isotopes using the carbon-12 atom has a mass of exactly 12 units as as a standard.
The relative sizes of the peaks gives a direct measure of the relative abundances of the isotopes. The tallest peak is often given an arbitrary height of 100 and is known as the base peak.
To calculate the relative atomic mass of the element X which has 3 stable isotopes with the relative peak intensities as given below:
79.52 for 180.0 u, 100.0 for 184.0 u, and 82.98 for 186.0 u, the sum of the products of the relative peak intensity of each isotope and their isotopic mass is divided by the sum of the peak intensities.
Relative atomic mass of X = (79.52 × 180) + (100 × 184.0) + (82.98 × 186)/(79.52 + 100 + 82.98)
Relative atomic mass of X = (14313.6 + 18400 + 15434.28)/(262.5)
Relative atomic mass of X = 48147.88/262.5 = 183.4
Therefore, the relative atomic mass of X is 183.4
The average atomic mass of element X has been 183.42 amu.
The average atomic mass of the element has been given with the abundance and the atomic mass of the isotopes present.
The average atomic mass (amu) has been given as:
[tex]amu=\dfrac{(am\;\times\; \rm \% abundance)_1\;+\;(\textit am\;\times\;\% abundance)_2\;+\;(\textit am\;\times\;\% abundance)_3}{\sum abundance}[/tex]
Where, atomic mass and abundance of isotope 1, has been [tex](am\;\times\; \rm \% abundance)_1=(79.52\;\times\;180)\;\rm u[/tex]
The atomic mass and abundance of isotope 2, has been [tex](am\;\times\; \rm \% abundance)_2=(100\;\times\;184)\;\rm u[/tex]
The atomic mass and abundance of isotope 3, has been
[tex](am\;\times\; \rm \% abundance)_3=(82.98\;\times\;186)\;\rm u[/tex]
The sum of abundance, has been, [tex]\sum abundance=79.52\;+\;100\;+\;82.98[/tex]
Substituting the values for calculating amu:
[tex]\\amu=\dfrac{(79.52\;\times\;180)\;+\;(100\;\times\;184)\;+\;(82.98\;\times\;186)\;amu}{79.52\;+\;100\;+\;82.98} \\amu=\dfrac{14,313.6\;+\;18,400\;+\;15,434.28}{262.5} \\amu=183.42[/tex]
The average atomic mass of element X has been 183.42 amu.
For more information about atomic mass, refer to the link:
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Will a paper airplane with longer wings fly farther than shorter wings? IV DV Hypothesis
Answer: yes
Explanation:
longer wing
How many atoms of hydrogen are there in 18g of water ?
Answer:
They are 1.204×10^24 atoms of hydrogen present in 18 grams of water. In order to calculate this,it is necessary to compute the number of hydrogen moles present in the sample.
Mercury completes one orbit around the Sun in 68 days.
a. True
b. False
Answer:
true :PP
Explanation:
Based on the molar mass of LiCl (42.39 g/mol) and on the count of the ions inside the unit cell, what is the mass (in grams) of LiCl is in a unit cell.
Answer:
This question appear incomplete
Explanation:
This question appear incomplete because of the absence of the value of the count of the ions inside the unit cell. To determine the mass (in grams) of LiCl in a unit cell, the formula below can be used
count of ions inside the unit cell = mass of LiCl ÷ molar mass of LiCl
Hence,
Mass of LiCl = count of ions inside the unit cell × molar mass of LiCl
Count of ions (Li⁺ and Cl⁻ ions specifically) inside the unit cell should have been provided in the question
Molar mass of LiCl was given to be 42.39 g/mol
The mass of the LiCl unit cell has been 2.82 [tex]\rm \bold{\times\;e^-^2^2}[/tex] grams.
The given structure has been the unit cell of the LiCl having 4 atoms of Li and 4 atoms of Cl.
The number of Li and Cl in a molecule of LiCl has been 1, and 1 respectively.
The presence of 4 atoms of Li and Cl indicates that there has been the presence of 4 molecules of LiCl.
The molar mass ofLiCl = 42.39 g/mol.
The number of molecules present in a mole of the sample has been equivalent to the Avagadro number.
6.023 [tex]\rm \times\;10^2^3[/tex] molecules = 1 mole LiCl.
6.023 [tex]\rm \times\;10^2^3[/tex] molecules = 42.39 grams LiCl.
The mass of 4 molecules of LiCl has been:
4 molecules = [tex]\rm \dfrac{42.39}{6.023\;\times\;1^2^3}\;\times\;4[/tex]
4 molecules = 2.82 [tex]\rm \times\;10^-^2^2[/tex] grams
2.82 [tex]\rm \times\;10^-^2^2[/tex] grams = 2.82 [tex]\rm \bold{\times\;e^-^2^2}[/tex] grams.
The mass of the LiCl unit cell has been 2.82 [tex]\rm \bold{\times\;e^-^2^2}[/tex] grams.
For more information about the mass of a unit cell, refer to the link:
https://brainly.com/question/14020091
Consider a cup of hot tea, a cup of juice at room temperature, and a cup of ice water. Which beverage has the highest average kinetic energy?
Question 2 options:
A)
All liquids have the same average kinetic energy.
B)
A cup of hot tea
C)
A cup of ice water
D)
A cup of juice at room temperature
Answer:
I’m guessing a Or c
Explanation:
Answer:
B)
A cup of hot tea
Explanation:
Because temperature of hot tea is higher than others
And kinetic energy is directly proportional to temperature.
Formation of a new substance is a sign of a
change.
A)
Physical
B)
Chemical
Kinetic
D)
Electrical
What happens to the temperature of a substance during a change of state?
Answer:
The smallest scale division is a tenth of a centimeter or 1 mm
Explanation:
CO2 + H2O → C6H12O2 + O2
In a chemical equation, such as the one for photosynthesis above, which is thec
correct order of terms from left to right?
Products, Yield, Reactants
There is no correct order, any order is acceptable.
O Yield, Reactants, Products
Answer:
B
Explanation:
Answer:
bExplanation:
What is the electron configuration for 1s2 2s2 2p6 3s2 3p6
True or False: Adhesion is the attraction between two different substances
Answer:
true
Explanation:
Adhesion is the attraction of molecules of one kind for molecules of a different kind
describe what happens in each stage of mitosis
Answer:
Mitosis consists of four basic phases: prophase, metaphase, anaphase, and telophase. ... These phases occur in strict sequential order, and cytokinesis - the process of dividing the cell contents to make two new cells - starts in anaphase or telophase. Stages of mitosis: prophase, metaphase, anaphase, telophase.
Explanation:
This diagram is of an amniote egg.
What is the correct label for A in this diagram?
embryo
zygote
amnion
placenta
Answer:
amnion
Explanation:
Answer: amnion
Explanation:
how one atom undergoing fission can cause up to three other atoms to undergo fission.
Answer:
In order to initiate most fission reactions, an atom is bombarded by a neutron to produce an unstable isotope, which undergoes fission. When neutrons are released during the fission process, they can initiate a chain reaction of continuous fission which sustains itself.
a sample of gas has a pressure of 742 torr. What is the pressure in atmospheres?
Answer:742 torr= approximately 0.976 atm
Explanation:
Since we know that one atm= 760 torr, we can compute the following calculation:
(742 torr/1)*(1atm/760torr)=0.976316 atm
Remember sig figs (3) to round it to 0.976 atm
[tex]\frac{742 torr}{1}[/tex]*[tex]\frac{1 atm}{760 torr}[/tex]=0.976316=0.976 atm
(torr cancels out and we're left with atm)
Hope this helps :)
A sample of nitrous Oxide has a volume of 1 £.20 at 1500 mm HG and -10°C. Calculators pressure when it’s value is compressed 250 L and its temperature increase to 34°c
Answer:
nitric acid will be if you get you will pixel purpose
Yvette mixed together water with calcium chloride in a beaker. She noticed that the temperature changed from 21oC to 37oC. She also noticed small solids starting to form in the beaker.
What type of change occured? Explain how you know.
Answer:
The temperature changed
Which system of measurement do scientists use?
metric
customary
Answer:
metric
Explanation:
Anybody know how I can get the answers from a Y o u t u b e video that’s an hour and 54 mins long without actually watching it?
Which of the following elements has the smallest ionic radius?
NEED HELP ASAP!!!!!!
What would be the three amino acids that correspond to the mRNA sequence: GGACACCCG
Question 1 options:
arg, ser, pro
glu, pro, his
gly, his, pro *********
pro, his, pro
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Water vapor
Liquid water
Which of the following labels should be added to all of the black arrows in the above
illustration?
O temperature increases
O temperature decreases
heat removed
O heat added
Answer:
o temperature increases
Explain your observations. What did you observe as time passed in each can of liquid? Did you see a significant change in temperature? Why or why not? Submit your data chart here.
Answer:
Hey there.. the question is not proper. Please give the whole question
