Exams & Certification

What is chemical formula of washing soda write its chemical equation of it’s preparation? also write it’s uses The Correct Answer and Explanation is: Chemical Formula of Washing Soda:The chemical formula of washing soda is Na₂CO₃·10H₂O. It is also known as sodium carbonate decahydrate. Chemical Equation for the Preparation of Washing Soda: Washing soda is […]

In this problem, you will use Lenz’s law to explore what happens when an electromagnet is activated a short distance from a wire loop. You will need to use the right-hand rule to find the direction of the induced current. Figure Iron core Switch open Part F < 1 of 2 Correct Now the switch

K2O(s) + H2O(l) → 2KOH(aq) Classify this reaction as a synthesis reaction, neutralization reaction, redox reaction, or none of the above. The Correct Answer and Explanation is: Correct Answer: Synthesis reaction Explanation: The chemical reaction: K₂O(s) + H₂O(l) → 2KOH(aq) demonstrates the formation of a single product from two reactants. In this case, potassium oxide

Balance the following chemical equations: a. _ KO (s) + _ HO (l) ? _ KOH (aq) + _ O(g) + __ HO(aq) The Correct Answer and Explanation is: To balance the chemical equation: __KO (s) + __H₂O (l) → __KOH (aq) + __O₂ (g) + __H₂O (aq) Start by identifying the atoms on both

Do in your Maths copy. 1. Express each of the following as a Roman numeral: i) 36 ii) 73 iii) 99 iv) 105 v) 114 2. Express each of the following as a Roman numeral: i) 226 ii) 341 iii) 596 iv) 611 v) 759 3. Write each of the following as a Hindu-Arabic numeral:

What percent of 125 is 90? Write your answers in the blanks. The Correct Answer and Explanation is: Correct Answer:72% Explanation:To determine what percent of 125 is 90, a ratio must be established. The quantity 90 is being compared to the whole value, which is 125. This comparison is represented by the fraction:90125\frac{90}{125}12590​ This fraction

Explain what 25 divided by 0.2 means The Correct Answer and Explanation is: Correct Answer:25 divided by 0.2 equals 125. Explanation:The expression 25 ÷ 0.2 represents how many times the number 0.2 fits into 25. To understand this clearly, it helps to think in terms of smaller units. The number 0.2 is the same as

Divide: \frac{5}{8} \div \frac{3}{4} ? \frac{1}{8} ? \frac{5}{6} ? \frac{3}{4} ? 1\frac{1}{2} The Correct Answer and Explanation is: The correct answer to \\frac{5}{8} \div \frac{3}{4}\ is \\frac{5}{6}\. Explanation: Dividing fractions follows a systematic approach: convert the operation into multiplication by using the reciprocal of the divisor. The reciprocal of \\frac{3}{4}\ is \\frac{4}{3}\. Thus, the original

Convert the decimal or whole number to a percent 1.15 3/8 The Correct Answer and Explanation is: Correct Answer:1.15 = 115%3/8 = 37.5% Explanation:Converting a decimal or a fraction to a percent involves multiplying the number by 100 and then attaching the percent symbol (%). Start with 1.15. Multiplying 1.15 by 100 gives: 1.15 ×

What are the factor pairs for 60 The Correct Answer and Explanation is: Factor Pairs of 60: The factor pairs of 60 are:(1, 60), (2, 30), (3, 20), (4, 15), (5, 12), (6, 10) Explanation: A factor pair consists of two numbers that multiply together to give a specific product. In this case, the goal