( VietNamese ) Cân 5.219 (g) mẫu thực phẩm, khử nhiễm và định mức đến 100mL (dung dịch 1). Rút 10mL để xác định độ mặn bằng phương pháp Volhard. Thể tích dung dịch AgNO3 0,05N đã dùng là 25mL, thể tích dung dịch KSCN 0,05N đem chuẩn độ với lượng dư AgNO3 thành 12,19 mL. Tính độ mặn thành% NaCl trong mẫu ban đầu và nồng độ (mg / L) của NaCl trong dung dịch 1 ( English ) Weigh 5,219 (g) food samples, decontaminate and make up to 100mL (solution 1). Withdraw 10mL to determine salinity by Volhard method. The volume of 0.05N AgNO3 solution used is 25mL, the volume of 0.05N KSCN solution is titrated with the excess AgNO3 to 12.19 mL. Calculate the salinity to %NaCl in the original sample and the concentration (mg/L) of NaCl in solution 1

the answer is yes

it has kinetic energy

reason

an object has kinetic energy when you stop the force carrying it, the object will stay in motion.

hope this contact me for more questions if you'd like: )

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.