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lorasvet [3.4K]

3 years ago

14

ANSWER THESE 3 QUESTION AND I WILL GIVE OUT THE BRAINLIEST

2 answers:

Lana71 [14]3 years ago

6 0

Answer:

A positive acceleration means and increase

A negative acceleration is a decrease

a zero acceleration is a constant movement so its not increasing or decreasing just constant

Explanation:

ladessa [460]3 years ago

4 0

<h2> $\sf \pink{Question}$ </h2>

What is a positive acceleration ?

<h2> $\sf \blue{Answer}$ </h2>

If the velocity of an object increases with time, its acceleration is positive.

<h2 /><h2> $\sf \pink{Question}$ </h2>

What is a zero acceleration ?

<h2> $\sf \blue{Answer}$ </h2>

Zero acceleration is an acceleration, just with zero magnitude. Motion with constant velocity is just a special case of motion with uniform acceleration.

<h2> $\sf \pink{Question}$ </h2>

What is a negative acceleration ?

<h2> $\sf \blue{Answer}$ </h2>

A negative acceleration means you will subtract from the current value of the velocity, and a positive acceleration means you will add to the current value of the velocity. ... And if the acceleration points in the opposite direction of the velocity, the object will be slowing down.

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20 mL of Ba(OH)2 solution with unknown concentration was neutralized by the addition of 43.89 mL of a .1355 M HCl solution. Calc

bezimeni [28]

Answer:

Concentration of the barium ions = $[Ba^{2+}] = 0.4654 M$

Concentration of the chloride ions = $[Cl^{-}]=0.9308 M$

Explanation:

$Moles (n)=Molarity(M)\times Volume (L)$

Moles of hydrogen chloride = n

Volume of hydrogen chloride solution = 43.89 mL = 0.04389 L

Molarity of the hydrogen chloride = 0.1355 M

$n=0.1355 M\times 0.04389 L=0.005947 mol$

$Ba(OH)_2+2HCl\rightarrow BaCl_2+2H_2O$

According to reaction, 2 moles of HCl reacts with 1 mole of barium hydroxide.

Then 0.05947 moles of HCl will react with:

$\frac{1}{2}\times 0.05947 mol=0.029735 mol$ barium hydroxide

Moles of barium hydroxide = 0.029735 mol

$Ba(OH)_2(aq)\rightarrow Ba^{2+}(aq)+2OH^-(aq)$

1 mole of barium hydroxide gives 1 mole of barium ion in an aqueous solution. Then 0.029735 moles of barium hydroxide will give:

$=1\times 0.029735 mol= 0.029735 mol$

Volume of solution after neutralization reaction :

= 20.0 mL + 43.89 mL = 63.89 mL = 0.06389 L

Concentration of the barium ions = $[Ba^{2+}]$

$[Ba^{2+}]=\frac{0.029735 mol}{0.06389 L}=0.4654 M$

$Ba(Cl)_2(aq)\rightarrow Ba^{2+}(aq)+2Cl^-(aq)$

1 mole of barium chloride gives 1 mole of barium ions and 2 moles of chloride ions in an aqueous solution.

Then concentration of chloride ions will be:

$[Cl^-]=2\times [Ba^{2+}]=2\times 0.4654 M=0.9308 M$

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Why won’t sugar and Citric acid leave a sediment in salad dressing??

satela [25.4K]

Because it contains vinegar because it does not form layers when mixed with other liquids. Sugar or citric acid because they don't leave sediment.

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Full net ionic equation of nitric acid and solid aluminum hydroxide please

atroni [7]

Is ionic equation . nitric acid + solid aluminium = hydroxide.

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What kind of exercise does not require the use of oxygen to metabolize energy? strength aerobic stretching anaerobic

MatroZZZ [7]

Answer:

See Below

Explanation:

'an aerobic ' means it does not use oxygen

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Please help me please

Ludmilka [50]

Answer:

b

Explanation:

i read this once and remember,trust me!

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