Chapter 7a D2L Homework

please help explain in detail the spec

Safari 7:34 AM Sun Oct 1 Patterns in Natur...ule 3 assignment 2 Home LE Calibri Bold Italic (E Patterns in Nature Module 3 Assignment 1. Why is glass not a mineral? Insert Draw Layout Review View References BI ●●● U aA 2. Describe several ways in which minerals can form. Directions: Answer each question as thoroughly as possible. Please make sure all of your answers are in your own words. 3. Name two different patterns of crystal growth. Define each one. ili 4. What is a geode? Which type of crystal growth do geodes exhibit? ㅁㅇ =✓ 5. If a mineral is very hard, which type of chemical bonds would that mineral most likely have in its atomic structure, and why? A 19% 0 :

Please help with question 4

Consider this list of substances: H2O, Ni, KI, CH4. Match these substances with the properties below.   Question 9 options:     Conducts electricity as a solution in water     Consists of a molecule with a tetrahedral electron pair geometry     Conducts electricity in the solid state     Can undergo hydrogen bonding with water   .   H2O .   Ni .   KI .   CH4

Please answer subparts to question 4. A,B, and C   4. For each substance described below, indicate whether it is a solid, liquid, or gas at room temperature.      4a. A clear substance that takes the shape of its container but does not fill it up completely      4b. A green colored substance with a melting point of 234 °C.      4c. A substance that maintains its shape when you remove it from the box that held it.

1. When a chunk of dry ice (solid carbon dioxide) is placed out in the air, the solid gradually disappears and a gas is formed above the solid. Does it go through chemical or physical change has occurred? Explain. 2. When the molecules of the solid CO2 becomes free upon exposure to the air. What happened to the bonds of the molecule?

The equation for photosynthesis is 6H2O (water) + 6CO2 (carbon dioxide) + Light Energy → C6H12O6 (glucose) + 6O2(oxygen). When first discovered, scientists were trying to decide if the oxygen in the product came from carbon dioxide or water. Which statement describes how scientists traced the path of oxygen?

Room temperature:   295.9 K Barometric pressure:   769.0 mmHg Vapor of water:   21.1 mmHg Volume of O2 collected:   59.20 mL Density of H2O2:   1.01 g/mL % Composition H2O2:   3.02 % Volume of H2O2 used:   5.00 mL Letter of the unknown solution of H2O2:   C Volume of O2 collected for the unknown:   64.90 mL     Based on the reaction stoichiometry, calculate the number of moles of O2.

In Parts 1 and 2, you noticed some patterns about what kind of substances conduct electricity when dissolved in water, and also how melting points are related.   Let's test this pattern by applying it to other substances. Consider the following substances: Potassium Chloride: KClKClKCl Octadecanol: C18H38OC_{18}H_{38}OC18​H38​O Dimethyl Sulfoxide: C2H6OSC_2H_6OSC2​H6​OS Lithium Bromide: LiBrLiBrLiBr Explain the reasoning that supports your answer.? Use the patterns you saw in the previous sections to predict whether the melting points for each substance will be high (above 400°C) or low (below 200°C).?

True or false? SEM can investigate the crystalline structure of an object?

Sample #1 evaporates more slowly than does Sample #2. The molecules are about the same size. Check all statements that apply to this situation. Group of answer choices Sample #1 has stronger IMFs Sample #2 has stronger IMFs Sample #1 is more polar Sample #2 is more polar Sample #1 has more molecules in the gas phase Sample #2 has more molecules in the gas phase The IMFs for Sample #1 are more difficult to disrupt The IMFs for Sample #2 are more difficult to disrupt

Draw the Lewis structure for the chlorofluorocarbon CFC-11, CFCl3 What chemical characteristics of this substance allow it to effectively deplete stratospheric ozone

Please answer in tipping format

The graph in Figure 5 below shows the variation in melting and boiling points for the elements in Group IV of the Periodic Table. Melting and Boiling Points of Group 4 elements 5000 |MPt (°C) |BPt C) 4000 3000 2000 1000 0+ Si Ge Sn Pb Figure 5: Diagram showing the melting and boiling points for the elements in Group IV of the Periodic Table. Figure taken from www.bing.com; accessed 19 May 2021. a) What is the general trend observed in Figure 5? b) Explain the variation in the melting and boiling points of the element in Group IV of the Periodic Table, shown in Figure 5, in terms of structure and bonding. { 11 }

2 pt Please provide an explanation for the relatively high boiling points of H20, HF, and NH3 in comparison to the hydrogen compounds of other elements in the respective groups. 100 H2O Group 16 (6A) HF Group 17 (7A) H,Te SbH3 H,Se HI NH3 Group 15 (5A) H.S ASH5 SnH4 HCI HBr PH, GeH, -100 SiH CH Group 14 (4A) -200 1 3. 4 Period HTML Editor B IUA 工E三州 星xx 三= A 12pt Paragraph Boiling point ('C)

Which of the following reactions would be an example of nitrogen fixation? Multiple Choice O 2 NO(g) + O₂(g) → 2 NO₂(g) 2 NO(g) → N₂(g) + O2(g) 2 NH3(g) → N2(g) + 3 H₂(g) N2(g) + O2(g) → 2 NO(g)