Exams & Certification

The Correct Answer and Explanation is: The correct answer is h = 10. Explanation To solve for h in the equation hC8 = 45, we need to use the formula for combinations, which is given by: C(n, k) = n! / [k!(n – k)!] where n is the total number of items, k is the […]

How many elements occur naturally on Earth? A. 117 B. 25 C. 92 D. 82 The Correct Answer and Explanation is: The correct answer is: C. 92 Explanation: There are 92 elements that occur naturally on Earth without the need for artificial synthesis. These are elements that can be found in nature either in pure

Minerals Across 2. A color of a mineral when it is in powdered form 5. It describes a mineral that contains silicon and oxygen and usually one or more other elements 7. A ratio of a mineral’s weight compared with the weight of an equal volume of water 10. A naturally occurring inorganic solid that

Construct the Lewis structure model for the covalent compound sulfur difluoride (SF2) using the following steps. (1) The number of valence electrons in the sulfur atom is 6. The total number of valence electrons in the two fluorine atoms is 14. Hence, the total number of valence electrons in SF2 is 20. Arrange the atomic

PLEASE DEFINE EACH WORD THEN USE EACH WORD IN A SENTENCE. BE SURE TO WRITE IN COMPLETE SENTENCES. 1. Transverse waves 2. Longitudinal waves 3. Mechanical wave 4. Frequency 5. Amplitude 6. Wave 7. Mechanical wave Your answer: The Correct Answer and Explanation is: 300-Word Explanation:Waves are fundamental to the study of physics, especially in

Put the following events in order: Put the oldest events first (top of list) and the most recent events last (bottom of list) Drag and drop options into correct order and submit For keyboard navigation_. Show More Origin of Homo sapiens Origin of Dinosaurs Origin of Prokaryotes Origin of Eukaryotes Origin of Animals Origin of

Place the following events in chronological order with the earliest (oldest) event first: Drag the left blocks below into their correct order: Nonvascular land plants and jawless fish evolve. Jawed fish dominate ocean life. Seed plants and insects appear. Gymnosperms appear. Reptiles evolve. Dinosaurs rule the Earth as flowering plants evolve. Grasslands spread. The first

Refund this question please The Correct Answer and Explanation is: Correct Answer: To request a refund for your question, you need to contact the customer support team of the platform where you posted it. Most platforms have a process in place for handling refunds related to unused services, accidental purchases, or dissatisfaction with the provided

I mistakenly forgot to cancel my subscription and now I was charged yesterday. Is there any way to get a refund? That would be appreciated. The Correct Answer and Explanation is: To request a refund for a mistakenly renewed subscription, the process depends on the service provider’s refund policies. Most companies allow refunds under certain

How can I get a refund from Chegg? I forgot I was on Chegg’s automatic subscription and I got charged. I did not use it at all and I already canceled the subscription, but how can I get my money back? The Correct Answer and Explanation is: To request a refund from Chegg after being