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3 years ago

10

Sarah rolls a ball in the grass. The ball starts off moving quickly, starts to slow down, and eventually stops. Using the words

push and friction, explain what happened to the ball due to forces.

1 answer:

gogolik [260]3 years ago

4 0

Answer:

hi 5th grader, stop trying to cheat :)

Explanation:

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An aqueous solution has a normal boiling point of 103.0°

torisob [31]

About 5 degrees that is

3 0

3 years ago

W(OH)2 + 2 HCl → WCl2 + 2 H2O

Afina-wow [57]

The amount of W(OH)2 needed would be 448.126 g

<h3>Stoichiometric calculation</h3>

From the equation of the reaction:

W(OH)2 + 2 HCl → WCl2 + 2 H2O

The mole ratio of W(OH)2 to HCl is 1:2

Mole of 150g HCl = 150/36.461

= 4.11 moles

Equivalent mole of W(OH)2 = 4.11/2

= 2.06 moles

Mass of 2.06 moles W(OH)2 = 2.06 x 217.855

= 448.188g

More on stoichiometric calculations can be found here: brainly.com/question/8062886

7 0

2 years ago

Consider two different ions. The anion has a valence of -2. The cation has a valence of +2. The two ions are separated by a dist

strojnjashka [21]

Answer:

Force of attraction = 35.96 $\times 10^{27}$ N

Explanation:

Given: charge on anion = -2

Charge on cation = +2

Distance = 1 nm = $10^{-9}$ m

To calculate: Force of attraction.

Solution: The force of attraction is calculated by using equation,

$F = \dfrac{k \times q_1 q_2}{ \r^2}$ ---(1)

where, q represents the charge and the subscripts 1 and 2 represents cation and anion.

k = $8.99 \times 10^9 \ Nm^{2}C^{-2}$

F = force of attraction

r = distance between ions.

Substituting all the values in the equation (1) the equation becomes

$F = \dfrac{8.99 \times 10^9 \times 2 \times 2}{ \left ( 10^-9 \right )^2 }$

Force of attraction = 35.96 $\times 10^{27}$ N

6 0

3 years ago

One atom of silicon can properly be combined in a compound with

Nina [5.8K]

<span>One atom of silicon can properly be combined in a compound with two atoms of oxygen.</span>

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3 years ago

Read 2 more answers

Check out this app! It's millions of students helping each other get through their schoolwork. https://brainly.app.link/qpzV02Ma

marishachu [46]

Answer:

why did you post a link to brainly when we are on brainly already??????

Explanation:

8 0

3 years ago