4 sinx / cosx * cosx
4 tanx / cosx Trig identity tanx = sinx/cosx
Answer:
B. Do a quick vehicle pre-check
Explanation:
Checking your vehicle everyday before driving will prevent you from having any incident which can eventually lead to a traffic accident. Scanning the vehicle includes checking on the conditions of brakes, tyres, mirrors, seatbelts, the horn, steering mechanism, and winshield wipers. Making this inspection a habit is the best way to avoid stressful and dangerous situations.
A common requirement of a PhD across different schools and countries is: D. a dissertation.
<h3>What is PhD?</h3>
PhD is an acronym for Doctor of Philosophy and it can be defined as the highest level of degree that is awarded to a graduate, especially after the completion of a masters degree (MSc.) in a particular course of study.
As a general rule, a dissertation is a common requirement from all students of a Doctor of Philosophy (PhD) across different schools and countries.
Read more on dissertation here: brainly.com/question/2094985
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Answer:
Explanation:
The equation for this chemical reaction is:
Ba + Cl2 -> BaCl2
So 1 moles of Ba react with 2 mole of Cl2 to form 1 mole of BaCl2.
Given 114g of Ba and 186g of Cl2 and molar mass of 137g for Ba and 71g for Cl2,
there are 114/137 = 0.83 mole of Ba and 186/71 = 2.62 mole of Cl2.
Ba is the limiting reactant as it will be used up.
Cl2 is the reactant in excess and there will be 2.62 - 0.83*2 = 0.96 mole or 0.96*71 = 68.16g left.
Moles of BaCl2 formed = moles of Ba = 0.83
As mass of 1 mole of BaCl2 is 208.23g, 0.83 mole or 0.83 * 208.23 = 172.83g of BaCl2 can be made.
