A box is pushed with a force of 30N while 5 N of friction acts in the opposite direction The box accelerates at 1.7 m/s2. What is the mass of the box???

the answer is true. hope it .

може ли да зареждате повече информация, моля

the answer is 0.42 is that is an option. this question provides no info

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.