Which of the following is the correct chemical equation for the reaction between hydrogen and oxygen? A. H₂+O₂=H₂O B. 2H₂+O₂=2H₂O C. H₂+2O₂=2H₂O D. 2H₂+2O₂=4H₂O 相关知识点: 试题来源: 解析 B。氢气和氧气反应生成水,化学方程式为 2H₂+O₂...
Which of the following is a correct ionic equation for the reaction between copper sulfate and barium chloride? A. Cu²⁺ + SO₄²⁻ + Ba²⁺ + Cl⁻ = CuCl₂ + BaSO₄ B. CuSO₄ + BaCl₂ = BaSO₄ + CuCl₂ C. Cu²⁺ + SO₄²⁻ = CuSO₄ D. Cu...
Which of the following is the correct simplification of the equation 2(x + 3) = 10? A. 2x + 3 = 10 B. 2x + 6 = 10 C. 2x = 10 - 3 D. 2x = 10 - 6 相关知识点: 试题来源: 解析 B。本题考查乘法分配律的运用。2(x + 3) 展开应是 2x + 6,所以 B 选项正确。A 选项未...
The values of 'K' for which the equation|x|2(|x|2–2k+1)=1−k2, has No root, when k belongs to View Solution The value ofKfor which the equation(K−1)x2+(K−1)y2+(K2−3K+2)xy+2x+(K−1)y−4=0represents circle is ...
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Which of the following is the correct accounting equation.A.Assets +liabilities= Opening capital –drawing +profitB.Assets +liabilities= Opening capital +drawing –profitC.Assets -liabilities= Opening capital –drawing +profitD.Net assets + liabilities=C
Hence, the correct answer is option (C) "Most enzymes are proteins."Note:Proteins do most of the activities that are required for the structure, function, and regulation of the body’s tissues and organs. Enzymes play an increasingly important role in medicine. The enzy...
Which of the following is the correct expression for the difference equation used to approximate the system differential equation in the lecture? ()A.B.C.D.的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuati.com)是专业的大学职业搜题找答案,刷题练习的
which is referred to asmodel multiplicity[12]. However, the features deemed most important to one model may not be important for another well-performing model [54]. In a scenario involving multiple models and explanations, the selection of a feature importance method for each specific model becom...
The correct Answer is:C To find the value ofkfor which the equation 3x2+2x(k2+1)+(k2−3k+2)=0 has roots of opposite signs, we can follow these steps: Step 1: Understand the condition for opposite signs For the roots of a quadratic equationax2+bx+c=0to be of opposite signs, ...