A salt mixture has 7 parts water and 1 part salt. Suppose another part of salt is added. What is the new ratio of salt to water? O 7 to 1 О 1 to 7 O 2 to 7 O 2 to 8

It should be 2:7 because 1/7 + 1/7=2/7

Step-by-step explanation:

answer: my brother can figure it out, imma go get him so i can answer : ) edit: my brother is sleeping, sorry man

step-by-step explanation:

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is: