题目

中和热测定实验中,用50mL0.50mol/L盐酸和50mL0.55mol/LNaOH进行实验,下列说法错误的是(     )  A.改用60mL 0.50mol/L盐酸跟50mL 0.55 mol/L NaOH溶液进行反应,求出的中和热数值和原来相同 B.用50mL0.50mol/L盐酸和50mL0.55mol/LNaOH进行实验比用50mL0.50mol/L盐酸和 50mL0.50mol/LNaOH测得的数值准确 C.酸碱混合时,量筒中NaOH溶液应缓缓倒入小烧杯中,不断用玻璃棒搅拌 D.装置中的大小烧杯之间填满碎泡沫塑料的作用是保温隔热、减少热量损失—Li Wei, I can’t understand ________.—The importance of sharing and giving love and joy around us.A.what the true meaning of Christmas isB.what is the true meaning of ChristmasC.what the true meaning of Christmas wasD.what was the true meaning of Christmas
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