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3 years ago

A soccer player kicks a ball 6.5 meters. How much time is needed for the ball to travel this distance

Chemistry

1 answer:

Ahat [919]3 years ago

8 0

It is 67 I think it is

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The weight percent of concentrated H2SO4, molar mass=980 g/mol, is 960% and its density is 184 g/ml. What is the molarity of con

Elan Coil [88]

Answer:

C H2SO4 = 9.79 M

Explanation:

molarity (M) ≡ # dissolved species / V sln
H2SO4 ↔ H3O+ + SO4-

∴ %w/w H2SO4 = 960% = g H2SO4 / g sln * 100

⇒ 9.6 = g H2SO4 / g sln

calculation base: 1000 g sln

⇒ g H2SO4 = 9600g

⇒ mol H2SO4 = 9600 g H2SO4 * ( mol H2SO4/ 980g H2SO4 ) = 9.796 mol H2SO4

⇒ V sln = 1000g sln / 1000g/L = 1 L sln

∴ ρ H20 ≅ 1000 Kg/m³ = 1000 g/L

⇒ C H2SO4 = 9.796 mol H2SO4 / 1 L sln

⇒ C H2SO4 = 9.796 M

8 0

3 years ago

FIRST ONE TO ANSWER GETS BRAINLIEST!!

Tpy6a [65]

B. The neck is the most dangerous part of the rip current because the water’s speed increases and swimmers can be pushed farther into the ocean.

5 0

3 years ago

Read 2 more answers

2. In pigeons, the allele B produces ash-red feathers. The allele b produces

bearhunter [10]

Answer:

it is C

Explanation:i had this on my test and got it right lol

6 0

3 years ago

What will Chlorine do to become an lon ? the riodic table do we find Chlorine ?

dalvyx [7]

Answer:

Explanation:

what subject is this so i can help you

3 0

3 years ago

18.A 2.50 L sample of dry air in a cylinder exerts a pressure of

Vlada [557]

Answer:

$\boxed{\text{7.50 L}}$

Explanation:

The temperature and amount of gas are constant, so we can use Boyle’s Law.

$p_{1}V_{1} = p_{2}V_{2}$

Data:

$\begin{array}{rclrcl}p_{1}& =& \text{3.00 atm}\qquad & V_{1} &= & \text{2.50 L} \\p_{2}& =& \text{1.00 atm}\qquad & V_{2} &= & ?\\\end{array}$

Calculations:

$\begin{array}{rcl}3.00 \times 2.50 & =& 1.00V_{2}\\7.500 & = & 1.00V_{2}\\V_{2} & = &\textbf{7.50 L}\\\end{array}\\\text{The volume of the gas is } \boxed{\textbf{7.50 L}}$

4 0

3 years ago