Ihave a 5 m stock solution of kcl and i need a 400mm working concentration (1x). if i want to make a 10 ml of a 2x concentration, how much 5 m stock and how much water do i need to add together

8.4 ml of water is needed to make a 10 ml of a 2x concentration.

Explanation:

From question,

This gives

V1 is the available volume of water in the stock solution.

To obtain 10ml of 2x concentration, the volume of water required is: of water.

Hence 8.4 ml of water is needed to make a 10 ml of a 2x concentration.

americans began to notice growing differences between the northern and southern sections of the country. there were more people living in cities in the north, which made it more urban. more people lived on farms in the south, which made it more rural. while many people were farmers in the northern states, there were now other ways to make a living, such as working in mechanical cotton gins factories manufacturing cloth, tools and other goods. people in the north supported high tariffs on goods imported from europe because the extra cost encouraged people to “buy american” instead. in the southern states, planters did not like tariffs because they sold most of their production to europe and bought their tools from there as well. southerners believed the protective tariff was something that only northern factory owners keep their profits high. so the southern politicians came up with an idea. they would opt out. they would simply ignore the protective tariff. it was ‘null and void’ in south carolina. the state would not collect the taxes on goods imported into south carolina, no matter what the president said they had to do. this decision led to the nullification crisis.

[ answer ]

foliated

[ explanation ]

foliation forms in a rock when pressure squeezes the rock together. the rock then has a design of many different color little lines. there are three types of foliated rock. the types are slate, schist, and gneiss. each type of foliated rock is different based on grain size and foliation characteristics. the lines appear when the rock has been under pressure.

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