The spring constant determines how far the spring will stretch for a given applied force: F=kx→k=Fx. If we place the same mass on the two springs, which means we have placed the same force on them, the one that stretches least has the largest spring constant.
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7 0

3 years ago

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Leona is making lemon pudding from "scratch." Her ingredients include fat-free milk, corn starch, lemon juice, egg yolks, salt,

andre [41]

Answer:

She added the ingredients in the wrong order, this will make the ingredients to mix in a different way and that can lead to different errors, formation of clumps is one of them.

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3 years ago

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Nitric acid (HNO3) is a strong acid that is completely ionized in aqueous solutions of concentrations ranging from 1% to 10% (1.

denpristay [2]

Answer:

The value of the $K_a$ of the nitric acid is 1.2.

Explanation:

The initial concentration of nitric acid = c = 7.50 M

$1 mM =m 10^{-3} M$

The dissociation constant of nitric acid = $K_a$

Degree of dissociation of nitric acid = $\alpha =33\%=0.33$

$HNO_3\rightleftharpoons NO_3^{-}+H^+$

initially

c 0 0

At equilibrium

(c-cα) cα cα

The expression of dissociation constant :

$K_a=\frac{[NO_3^{-}][H^+]}{[HNO_3]}$

$K_a=\frac{c\times \alpha \times c\times \alpha }{c-c\alpha}$

$K_a=\frac{c\times (\alpha )^2}{(1-\alpha )}$

$K_a=\frac{7.50 M\times (0.33)^2}{(1-0.33)}=1.2$

The value of the $K_a$ of the nitric acid is 1.2.

6 0

3 years ago

The equator is an imaginary line of what on earth (latitude or longitude)

Debora [2.8K]

Answer:

The Equator is an imaginary line perpendicular to this axis. It is equidistant from the North and South Poles, and divides the globe into the Northern Hemisphere and the Southern Hemisphere.

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3 years ago

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