Química
Reacciones químicas, estequiometría, estructuras moleculares y propiedades.
- question 4 for this question, you must do all of your calculations and …
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drag the ions together in such a way as to make a rectangle, from top d…
* **cation to anion ratio:** 1 : 1 * **Compound formula:** \(\text{Mg}_1\text{O}_1\)
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drag the ions together in such a way as to make a rectangle, from top d…
* **cation to anion ratio:** `1 : 2` * **Compound formula:** `Ca1Br2`
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drag the ions together in such a way as to make a rectangle, from top d…
* **cation to anion ratio:** `1 : 1` * **Compound formula:** `Li_1Br_1` (entered into the blanks as **Li** **1** **Br** **1**)
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drag the ions together in such a way as to make a rectangle, from top d…
- **cation to anion ratio:** \(3 : 2\) - **Compound formula:** \(\text{Fe}_3\text{N}_2\) (entered as \(\text{Fe}\) \(\underline{3}\) \(\text{N}\) \(\underline{2}\) in the blanks)
- heat melting boiling solid liquid gas freezing condensation cooling
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drag the ions together in such a way as to make a rectangle, from top d…
- **cation to anion ratio**: \(2 : 1\) - **Compound formula**: \(\text{Na}_2\text{S}_1\)
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drag the ions together in such a way as to make a rectangle, from top d…
* **cation to anion ratio:** `1 : 1` * **Compound formula:** `Ca₁O₁` (or entered in the boxes as **Ca** **1** **O** **1**)
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drag the oval over the words that complete the sentences below: ions, w…
* **First sentence choices**: * Drag an oval over **cations** * Drag an oval over **lost** * **Second sentence choices**: * Drag an oval over **anions** * Drag an oval over **gain…
- solid | type of solid | type of particle | att forces freon-11 \\(ccl_3…
- \\(\\text{caco}_3\\) decomposes: \\(\\text{caco}_3(\\text{s}) \ ightarr…
- calculate the mr of calcium carbonate, \\(\\text{caco}_3\\). \\(\\text{…
- calculate the mass of 0.25 mol of magnesium oxide. 2 marks question 2: …
- question 1: formulae, equations and relative formula mass magnesium rea…
- what can the reader learn about by studying the implicit meanings of wo…
- which household chore is a physical change? folding laundry burning yar…
- why is ice melting a physical change? ice and water are the same molecu…
- why is boiling water a physical change? it makes new molecules. it rear…
- why is ice melting considered to be a physical change? the water molecu…
- which of these is a physical change? rust is formed on a nail in water …
- which of these is a physical change? water freezes something burns
- why is cutting a piece of paper considered a physical change? cutting t…
- which of these are physical changes? cutting, tearing, freezing, thawin…
- what do we call a substance in which two or more elements are chemicall…
- what state of matter is carbon dioxide at room temperature? solid liqui…
- carbon dioxide molecule below is a model of a carbon dioxide molecule, …
- which of these is the atomic number of silver (ag)? 47 ag 107.868
- which of the following is measured in the unit amu? atomic number eleme…
- the atomic number is the number of protons in the nucleus. which elemen…
- which element has an atomic number of 75? tungsten rhenium technetium
- which part of an atom is found outside the nucleus? - electrons - proto…
- what do we call the area of an atom where electrons are located? mitoch…
- what type of charge does a neutron have? a neutron has a positive charg…
- located at the center of the atom, the nucleus consists of protons with…
- for example: \\(\\frac{3}{4} \ ightarrow 0.75 \ ightarrow 75\\%\\) it i…
- scientific notation another important calculator skill is using the sci…
- problem 06-06 (algo) describe how a manager who derives satisfaction fr…
- experiment 1: write the balanced chemical reaction that occurs in this …
- how much energy does the water in this experiment absorb according to t…
- the energy produced by a snack in an experiment is calculated to be 1,2…
- a calorimeter absorbs 36,200 j of energy from the snack shown in the da…
- how much energy does the water in this experiment absorb according to t…
- what does e represent? - energy of the products - energy of the reactan…
- what does point f represent? - energy of the reactants - transition sta…
- what type of energy change is represented by this diagram? nuclear kine…
- what does line a represent? enthalpy of reaction activation energy (for…
- what type of energy change is represented by this diagram? - endothermi…
- what does line c represent? - activation energy (forward) - transition …
- what is the final concentration of 1,500. ml of a solution made from 20…
- what volume of a 1.25 m potassium fluoride (kf) solution would be neede…
- you want to determine the concentration when 93 ml of a 2.03 m kf solut…
- you want to determine the concentration when \\(93\\text{ ml}\\) of a \…
- what volume of a 2.5 m lithium nitrate solution would be needed to make…
- you want to determine the volume of \\(2.5\\text{ m}\\) lithium nitrate…
- you want to determine the volume of \\(2.5\\text{ m}\\) lithium nitrate…
- question 6 what does samara mean by \spontaneous composition\ or \organ…
- in a gas particle are scattered with big gaps
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mr. potters physical science classes conducted an experiment to determi…
b. Group: \(3^{\text{rd}}\) and \(4^{\text{th}}\) hours, with values under the true density Group: \(1^{\text{st}}\), \(2^{\text{nd}}\), \(5^{\text{th}}\), and \(6^{\text{th}}\) h…
- following contains information about hazardous medications and chemical…
- a pharmacy technician observes a patient who is demonstrating aggressiv…
- which of the following is a characteristic of a medications brand name?…
- in the little boy found, what happens to the boy? he finds his estrange…
- determine the chemical formula of each of the hydrates. cobalt(ii) brom…
- complete the rhyme scheme: \julia and i did lately sit, a playing for s…
- complete the rhyme scheme: \how sweet the music sounded a that summer l…
- complete the rhyme scheme: \oh it were sweet to think a that may should…
- complete the rhyme scheme: \oh it were sweet to think a that may should…
- complete the rhyme scheme: \oh, thats the paradise-in-bloom, i said and…
- complete the rhyme scheme: \ah! what is not a dream by day a to him who…
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6) fill in the following chart for the following elements write the sta…
| Name of Element | Standard Notation | Bohr-Rutherford Diagram | Lewis Dot Diagrams | | :--- | :--- | :--- | :--- | | Oxygen | \({}^{16}_{8}\text{O}\) | A central nucleus contain…
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5) fill in the following chart for each of the subatomic particles. \\b…
5) The completed chart for the subatomic particles is: | Subatomic Particle | Charge | Location | Mass | Role | | :--- | :--- | :--- | :--- | :--- | | Protons | Positive (\(+1\)) …
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c) how do they differ from each other? give an example of each d) what …
d) Elements and compounds. e) Elements consist of only one type of atom and cannot be broken down chemically (e.g., Oxygen, \(O_2\)). Compounds consist of two or more different el…
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1) for the following questions determine if the statement is true or fa…
1) - True - False. You can determine the mass of an atom by adding the protons and neutrons. - True - True - True - False. A compound is two or more different atoms chemically com…
- ammonium bisulfide le chateliers principle iii the contents of the cont…
- ammonium bisulfide \\(\\text{nh}_3(g) + \\text{h}_2\\text{s}(g) \ ightl…
- ammonium bisulfide unreadable text describing the disturbance to the sy…
- 0.20 mol nacl is added to 1.0 l of saturated \\(\\text{pbcl}_2\\) solut…
- ch 12 styling aids quiz 6 points question 1 of 2 fill in the blanks: ha…
- part i: multiple choice section unit 1: reaction kinetics 1. know what …
- question 5 which of the options below best explains unsecured financing…
- the melting and boiling points of some of the halogens are shown in the…
- question 59 how do most dry powder agents extinguish combustible metals…
- for a quick knockdown on class c fires, \\(\\text{co}_2\\) should be ap…
- when using a multipurpose dry chemical extinguisher on a class a fire, …
- nfpa® 1901 requires that fire apparatus carry one dry chemical extingui…
- question 46 which are designed to extinguish fires involving combustibl…
- which is the primary disadvantage of using dry chemical portable fire e…
- thermal or chemical decomposition of fuel because of heat that generall…
- the zinc hydroxide reacts with the excess ammonia in the solution to fo…
- when \\(\\text{mgcl}_2\\) reacts with \\(\\text{na}_3\\text{po}_4\\), \…
- when \\(\\text{mgcl}_2\\) reacts with \\(\\text{na}_3\\text{po}_4\\), \…
- matching: match each term/statement to the best description. strength c…
- matching: match each prompt to the correct completion. acids + bases \ …
- matching: match the type of reaction to what it does. endothermic react…
- matching: match the atomic part to its description. protons neutron ele…
- ph is a measure of or (how basic something is). acidity alkalinity
- if \\(\\text{h}^+ = 0.0001\\text{ m}\\), then \\(\\text{ph} = \\) 4 3 2…
- use the example: if \\(\\text{h}^+ = 0.001\\text{ m}\\), then \\(\\text…
- match the periodic table terms: atomic number = number of mass number =…
- atoms are usually electrically neutral, but they can lose or gain . ele…