which of the four basic types of solids would you expect ammonia, cesium (cs), cesium iodide (csi), and silicon (si) to be, respectively?
Answers
Ammonia (NH3) is a molecular solid, cesium (Cs) is a metallic solid, cesium iodide (CsI) is an ionic solid, and silicon (Si) is a covalent network solid.
Ammonia (NH3) is expected to be a molecular solid. In this type of solid, individual molecules are held together by weak intermolecular forces such as hydrogen bonding. Ammonia molecules are polar and can form hydrogen bonds with each other, resulting in a molecular solid.
Cesium (Cs) is expected to be a metallic solid. Metallic solids are composed of metal atoms held together by metallic bonding. Cesium is a metal that readily donates its valence electrons to form a sea of delocalized electrons, creating a network of positive ions surrounded by a "sea" of electrons, giving rise to metallic bonding.
Cesium iodide (CsI) is expected to be an ionic solid. Ionic solids are composed of positively and negatively charged ions held together by electrostatic forces of attraction. CsI is formed by the combination of Cs+ and I- ions, resulting in strong ionic bonds between the oppositely charged ions.
Silicon (Si) is expected to be a covalent network solid. Covalent network solids are composed of a three-dimensional network of covalently bonded atoms. In the case of silicon, each silicon atom forms strong covalent bonds with four neighboring silicon atoms, creating a continuous network structure held together by strong covalent bonds.
In summary, the expected types of solids for the given compounds are: molecular solid for ammonia (NH3), metallic solid for cesium (Cs), ionic solid for cesium iodide (CsI), and covalent network solid for silicon (Si).
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Related Questions
In which part of the digestive system does a chemical change of the food first occur?
Answers
Answer:
Mouth
Explanation:
Chemical digestion begins in the mouth when enzymes in saliva begin to break down carbohydrates.Answer:
A - mouth
Explanation:
edge
please help asap Which characteristic is most likely determined by biological factors? (4 points) Athleticism Hair style Political views Work ethic
An infant turns toward the sound of the mother's voice. What does this demonstrate? (4 points)
The response is a learned behavior demonstrating attachment to a caregiver.
The response is an unlearned behavior demonstrating the ability to form emotional connections.
The response demonstrates the importance of the biological need for food.
The response demonstrates insecure attachment to a caregiver.
Answers
This viewpoint contends that biological and genetic variables have an impact on personality. One illustration of the way a biological perspective may be utilised to explain human personality is temper.
What part does genetics play in behavioural science?A few behavioural and psychological features that each person's DNA can influence include intelligence, personality, and propensity for mental illness. The both adults and the children in a family may be impacted by these characteristics.
Are biological characteristics a determining role in personality?According to Hans Eysenck's theory, personality has a biological basis and that genetic legacy contributes to personality differences [62,115]. Extraversion, neuroticism, and psychoticism are the three independent super-factors in the Eysenck model.
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Answer:
The response is an unlearned behavior demonstrating the natural ability to form emotional connections.
Explanation:
I just know (;
Convert from °C to K. 13°C
Answers
Answer:
286.15 Kelvin
Explanation:
Answer:
286.15
Explanation:
Hope this helps, if its correct could you mark me as brainliest please?
why would scientists use a spectrometer in space.
A. To study the chemical composition of the surface of a planet
B. To detect the birth and death of distant start and galaxies
C. To convert light from stars into usable energy for humans
D. To maintain a constant air supply on board a space shuttle
Answers
Answer:
A. To study the chemical composition of the surface of a planet
Explanation:
Strictly speaking, a spectrometer is any instrument used to view and analyze a range (or a spectrum) of a given characteristic for a substance (for example, a range of mass-to-charge values as in mass spectrometry), or a range of wavelengths as in absorption spectrometry like nuclear magnetic radiation spectroscopy
-hope this helps!
BALANCED WORD EQUATION Aluminium carbonate + hydrochloric acid -->
Answers
Answer: 2Al+6HCl→2AlCl3+3H22Al+6HCl → 2AlCl3 + 3H2
Explanation:
This is the last one I need. Just want to make sure I did it right.
Answers
To combine ions to form ionic compounds, we need the combine in such a way that it gets neutral charge.
We can combine each anion with each cation to get the 4 compounds we need.
To combine SO₄²⁻ with Pb⁴⁺ we first find the Least Common Multiple of their charges, 2 and 4.
They have the factor 2 in common, so the LCM is 4. This is the final charge of each that will cancel out.
To get 4+, we only need 1 Pb⁴⁺.
To get 4-, we need 2 SO₄²⁻.
So, the formula is:
Pb(SO₄)₂
To combine SO₄²⁻ with NH₄⁺ is easier because one of them has single charge. In this case, we can simply pick one of the multiple charge ion and the same amount that will cancel its charge of the single charged one.
So, we picke 1 SO₄²⁻, ending with 2-.
And we picke 2 NH₄⁺, ending with 2+.
The formula:
(NH₄)₂SO₄
To combine C₂H₃O₂⁻ with Pb⁴⁺ we do the same, because the anion is single charged.
Pick 1 Pb⁴⁺, ending with 4+.
Pick 4 C₂H₃O₂⁻, ending with 4-.
The formula:
Pb(C₂H₃O₂)₄
To combine C₂H₃O₂⁻ with NH₄⁺, both have same charge, so we just need one of each and their charges will cancel out.
The formula:
NH₄C₂H₃O₂
So, the formulas are:
Pb(SO₄)₂
(NH₄)₂SO₄
Pb(C₂H₃O₂)₄
NH₄C₂H₃O₂
Explain why the melting point of calcium is high?
Answers
Calcium has a high melting point which is about 842°C.
This is coz Calcium atoms have smaller radii since they have also a greater nuclear charge.
The oceans hold ________ carbon than the atmosphere. A) 10,000 times more B) 50 times more C) 1000 times less D) 10,000 times less E) 5 times more
Answers
The oceans hold "A) 10,000 times more" carbon than the atmosphere.
This is because the oceans act as a large carbon sink, absorbing and storing significant amounts of carbon dioxide from the atmosphere.
In the deep waters of the ocean, coral reefs are found in abundance. Algae live on these coral reefs, providing nutrition and producing pigments that give color to the corals.
The corals offer shelter to the algae. So, they share a symbiotic association. Climate change has led to increased temperatures and has caused the corals to throw away the algae living inside them.
This action causes the corals to be bleached because of a lack of pigment. This change will lead to coral bleaching. The corals will die of lack of nutrition with time.
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3. What is the hydrogen ion concentration of a solution with a pH of 2.0?
Answers
Answer:
[H+] = 10^-2
Explanation:
pH = -log[H+]
2 = -log[H+]
[H+] = 10^-2
The organisms that form the base of most open-ocean food webs are
Answers
To this day, scientists are interested in compressing gases other than nitrogen to extreme pressures. Which other gas does the article mention, and what information do scientists hope to gain by compressing this gas into a solid? Select the correct answer from each drop-down menu. The article also mentions (?) gas. Scientists hope to learn about (?) from compressing this gas.
Answers
The other gas which the article mentioned is Helium gas.
What is Compression?This refers to the squeezing or shortening of a substance which is most often done by increasing the temperature.
The information scientists hope to gain by compressing this gas into a solid is by studying the molecular structures and using it in the production of other substances which is why Nitrogen and Helium are the gases being studied in this scenario.
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Answer:
hydrogen and gas giants
Explanation:
FROM PLATO
A temperature change of 51 deg * C would be equivalent to a temperature change of
Answers
i don't know if you mean C° to F° but in F° the change would be 123.8°
Question 9What pressure will be exerted by 15 g of carbon dioxide gas in a 20 L container at 0 °C?
Answers
In this question, we need to find the value of pressure of a 15 grams sample of CO2 gas, and in order to find this value, we will be using the Ideal gas law formula, which is the following:
PV = nRT
Where:
P = pressure in atm
V = volume in liters, 20 Liters
n = number of moles
R = gas constant, 0.082
T = temperature in kelvin, 0°C = 273 K
The number of moles we need to find based on the mass in the question and based on the molar mass of CO2, 44g/mol:
44g = 1 mol
15g = x moles
44x = 15
x = 15/44
x = 0.34 moles of CO2 in 15 grams
Now we have the values to add to the formula:
P * 20 = 0.34 * 0.082 * 273
20P = 7.61
P = 7.61/20
P = 0.38 atm of pressure
The pressure will be 0.38 atm
The following reaction occurs in aqueous ACIDIC solution:
NO3– + I– à IO3– + NO2
In the balanced equation the coefficient of H2O is:
a) 1
b) 2
c) 3
d) 4
e) 5
Answers
The balanced equation for the reaction is: 8H+ + \(3NO_{3-}\) + 2I- → \(3IO_{3-}\) + \(3NO_{2}\) + \(4H_{2}O\). The answer is option (d) 4.
The given reaction is taking place in an acidic solution, therefore we need to balance the equation by adding H+ ions.
Here, we can see that the coefficient of \(H_{2}O\) is 4. Therefore, the answer is option (d) 4.
The balanced equation shows that 8 H+ ions are required for the reaction to take place. These H+ ions will react with the \(NO_{3-}\) and I- ions to form \(HNO_{3}\) and HI respectively. This will result in the formation of \(IO_{3-}\), \(NO_{2}\) and \(H_{2}O\).
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Describe how to prepare 15 ml of a 0.25 M CaCl, solution using deionized water and CaCl2 salt. The molecular weight of CaCl, is 110.98 g/mol. Show your work. (Recall: M = mol/L) (1 point)
Answers
The amount of Calcium chloride required to prepare 15 ml of 0.25 M CaCl₂ solution using deionized water and CaCl₂ salt is 0.415 grams. Thus can be calculated by using molarity.
What is the weight of CaCl₂ required?
The calculation to prepare 15 ml of a 0.25 M CaCl₂ solution using deionized water and CaCl₂ salt is given below:
To make a 0.25M CaCl₂ solution, the molar mass of CaCl₂ must be calculated first.
Molar mass of CaCl₂ = 1 × 40.08 + 2 × 35.45= 110.98 g/mol
The calculation of number of moles is given as:
Number of moles = Molarity × Volume (L)
Number of moles of CaCl₂ = 0.25 × (15/1000) = 0.00375 moles
Number of grams of CaCl₂ = Number of moles × Molecular weight
Number of grams of CaCl₂ = 0.00375 × 110.98= 0.415g
So, to prepare a 0.25M CaCl₂ solution with a volume of 15 ml, 0.415g of CaCl₂ needs to be added to 15 ml of deionized water.
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Which statement below best describes how the interaction of two systems causes a human arm to bend?
A. The circulatory system sends signals to the nervous system
B. The nervous system sends signals to the muscoskeletal system
C. The circulatory system sends singlas to the musclskeletal system
D. The digestive system sends signals to the nervous system
Answers
Answer:
your answer is C I believe
The observations above suggest that the extra liquid you added to your beaker could have been: a. Pure water b. More of the solution that was in your beaker to start c. A highly concentrated solution of salt and sugar
Answers
it seems that the extra liquid you added to your beaker could have been either a) pure water, b) more of the solution that was initially in your beaker, or c) a highly concentrated solution of salt and sugar.
To determine which option is correct, you can consider the changes observed in the beaker after adding the extra liquid. If the concentration of the solution remains unchanged, then option a) pure water is likely the correct answer, as it would dilute the solution evenly without affecting its composition.
If the concentration increases, then option c) a highly concentrated solution of salt and sugar might be correct, as it would increase the overall solute content in the beaker.
Finally, if the concentration remains the same but the volume increases, option b) more of the original solution could be the correct answer, as it would maintain the original composition while adding volume.
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In a first-order decomposition reaction. 33% of a compound decomposes in 7.3 min. How long (in min) does it take for 81.8% of the compound to decompose
Answers
In a first-order breakdown reaction, 81.8% of the molecule takes 19.0 min to break down. A compound breaks down in 7.3 minutes by 33%. The human race started to scratch right away.
A means of climbing the food chain. People snatched what they needed from those who were unsuccessful in the same race without regard for anyone else (the producers and the rest of the consumers). First order in both surfactant and acid concentrations, decomposition is a dislocation process of reaction. The process is autocatalytic since acid is produced during the degradation. Reservoir rock, on the other hand, has a sizable absorbing impact.
x = (81.8*7.3)/33 x = 19.0 min
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Write your question here (Keep it simple and clear to get the best answer) what are the uses of alkane
Answers
Answer: Alkanes are important raw materials of the chemical industry and the principal constituent of gasoline and lubricating oils. Natural gas mainly contains methane and ethane and is used for heating and cooking purposes and for power utilities (gas turbines).
If you had a 4.0M and a 0.4M solution of nitric acid, which would have a lower pH? Why?
Answers
Answer:
the second one would have lower
Explanation:
because of the amount
pH is the measure of the negative log of the hydrogen ion concentration. The 0.4 M nitric acid will have lower pH.
What is pH?pH is the concentration of the hydronium or the hydrogen ion in the water that gives the account to the basic and acidic nature of the substance.
pH is dependent on the concentration of the substance as the increased concentration increases the pH while the lower concentration lowers the pH.
Therefore, 0.4 M will have a lower concentration.
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What is the [OH-] in a solution that has a [H3O+] = 2.0 x 10-4 M? A) 2.0 x 10-4 M B) 5.0 x 10-11 M C) 1.0 10-10 M D) 5.0 x 10-10 M E) 2.0 x 10-10 M
Answers
The answer is B) 5.0 x 10^-11 M. To find the [OH-] in a solution, we can use the equation:
Kw = [H3O+][OH-]
where Kw is the ion product constant for water (1.0 x 10^-14 at 25°C).
Rearranging this equation, we get:
[OH-] = Kw / [H3O+]
Substituting the given value for [H3O+], we get:
[OH-] = (1.0 x 10^-14) / (2.0 x 10^-4)
Simplifying this expression, we get:
[OH-] = 5.0 x 10^-11 M
Therefore, the answer is B) 5.0 x 10^-11 M.
The ion product constant (Kw) is a measure of the extent to which water dissociates into its constituent ions, hydrogen ions (H+) and hydroxide ions (OH-), at a specific temperature. It is defined as the product of the concentrations of H+ and OH- ions in pure water at a given temperature, and is represented by the equation: Kw = [H+][OH-]
At 25°C, Kw has a value of 1.0 x 10^-14. This means that in pure water, the concentration of H+ and OH- ions is equal and is equal to 1.0 x 10^-7 moles per liter. The ion product constant of water is affected by temperature, pressure, and the presence of other solutes in the solution.
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PLEASE HELP ME 50 POINTS RIGHT ANSWERS ONLY!!!!! :)
Consider the solubility curve at right. which solid material is a solid solute?
Answers
The content that is a solid solute can be determined using the provided solubility curve by looking at the locations where the solubility curve crosses along the temperature axis.
The saturation point at which no more solute can dissolve in the solvent is represented on the supply solubility curve by the places where the curve crosses the temperature axis. At these saturation points the solute is in its solid state as its solubility in the particular solvent becomes maximum.
Based on the solubility curve, the solid solute content can be identified as follows: Substance A is a solid solute in the specified solvent because the solubility curve cuts the temperature axis at the point where it lies.
Therefore, the correct option is C.
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How are nitrogen-14 and nitrogen-15 same and different?
Answers
Answer:
Since different isotopes of an element have different numbers of neutrons (but always the same number of protons) they have different mass numbers. Nitrogen-14 and nitrogen-15 are both stable isotopes of nitrogen. However, the other 5 isotopes are all unstable.
Please help!! Why is the following Electron Configuration incorrect for Aluminium?
Answers
Answer:
3s^1 would be 3s^2
Explanation:
Help Me!!!!!!!!!!!!!!!!!!!!!!!!
Answers
Answer:
1. MgO + 2HBr - - > MgBr2 + H20
2. 2N2 + 5O2 - - > 2N2O5
3. C2H4 + 3O2 - - > 2CO2 + 2H2O
4. Fe + 2HCl - - > FeCl2 + H2
What is the percentage of oxygen in air?
Answers
It’s a mixture of different gases. The air in Earth’s atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen.
PLEASE HELP WILL GIVE BRAINLIEST!!!!
Which of the following is the best definition of a chemical property?
A. The solubility of salt.
B. The ability of gunpowder to explode.
C. The ability of something to undergo a change or reaction.
D. Something that can be observed or measured without changing the identity of the substance.
Answers
Answer:
The B. Is perfect match of a definition of chemical property.
Explanation:
The ability of gunpowder to explode.
The ability of gunpowder to explode is the best definition of a chemical property.
What is chemical property?The change of one type of matter into another type of matter and inability to change into the previous forms is called a chemical property. Examples of chemical properties include reactivity and heat of combustion.
So we can conclude that the ability of gunpowder to explode is the best definition of a chemical property.
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Give the relation of energy (E) and frequency (v) as given by Planck. Calculate the frequency and energy of a photon of radiation having wavelength 3000°A.
Pls answer correctly,need it urgently...
Answers
Solution:-1
\(\\ \sf\longmapsto E=hv\)
E denotes to Energy h denotes to planks constantv denotes to frequency.Solution:-2
Wavelength=3000Å\(\boxed{\sf \lambda=\dfrac{c}{v}}\)
\(\\ \sf\longmapsto v=\dfrac{c}{\lambda}\)
\(\\ \sf\longmapsto v=\dfrac{3\times 10^8m/s}{3000\times 10^{-10}m}\)
\(\\ \sf\longmapsto v=0.001\times 10^{18}s^{-1}\)
\(\\ \sf\longmapsto v=1.0\times 10^{15}s^{-1}\)
Now
\(\\ \sf\longmapsto E=hv\)
\(\\ \sf\longmapsto E=6.626\times 10^{-34}Js\times 1.0\times 10^{15}s^{-1}\)
\(\\ \sf\longmapsto E=6.6\times 10^{-19}J\)
Which subatomic particle(s) are located within the nucleus of an atom?
Answers
Protons and neutrons are present inside the nucleus of an atom while electrons revolve around circular orbits.
What is Proton and Neutrons?
The atom is made up of the subatomic particles electron, proton, and neutron. The atom is made up of a core nucleus that has neutrons and protons in it. The nucleus is surrounded by electrons.
Neutrons are neutral, protons are positively charged, and electrons are negatively charged.
All atoms' nuclei include protons, which are subatomic particles with a positive charge. One proton has a positive charge. The quantity of protons in the element's nucleus determines its atomic number. Two up quarks and one down quark make up protons. The mass of it is 1.007277 amu (atomic mass units).
All atoms, with the exception of hydrogen, include neutrons, which are subatomic particles that are neutrally charged.
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Examine the EM spectrum chart. Describe what is happening as the EM spectrum goes
from Radio Waves to Gamma rays,
Vight
Uno
Somme
Morowaves
Infrared
Radio Waves
Woman
w
w
Wavelength
The amplitude increases
The wavelength increases
The wavelength decreases
The amplitude decreases
Answers
Answer:
The wavelength decreases
Explanation:
As you go along the EM spectrum from radio waves to gamma rays, the wavelength decreases as the wave's energy and frequency increase.