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Sergio039 [100]

3 years ago

7

Mariana Pajon rides a bmx bike 50 miles in 2 hours. What is her speed? WILL MAKE THE BRAINLIEST WHO ANSWERS FIRST AND WILL GIVE

100 BRAINLY POINTS!!!!!!!!!!!!!!!!!

1 answer:

RSB [31]3 years ago

5 0

Answer:

25

Explanation:

25 because when you divide 50/2 it will be 25m/s

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True or false if an object displaces 50 ml of water the object's volume is 50mL

andrew11 [14]

Answer:

True

Explanation:

The volume of water displaced by an object completely submerged is its actual volume. It implies that in the container the object create a space of size for itself which is the volume of the object. This approach is used in calculating the density of many irregular solids from their measured masses.

6 0

3 years ago

Pollen is produced in the anthers, which are the _______ organs of flowers.

scoray [572]

D, since the anther is a male organ

8 0

3 years ago

(a) a 0.2 m potassium hydroxide solution is titrated with a 0.1 m nitric acid solution. (i) balanced equation: (ii)what would be

Stells [14]

$\text{KOH} (aq) + \text{HNO}_3 (aq) \to \text{KNO}_3 (aq) + \text{H}_2\text{O} (l)$

The solution shall contain only $\text{KNO}_3 (aq)$ (and water) at the equivalence point. Both potassium hydroxide and nitric acid exist as strong electrolytes. As a result, $\text{KNO}_3 (aq)$ , the salt derived from a reaction between the two species would undergo hydrolysis of a negligible extent. This neutralization reaction therefore be neutral at the equilibrium point.

The question states that the solution is "titrated with a ... nitric acid solution" indicating that $\text{HNO}_3$ is added to the initially-basic solution. PH value of the solution would keep decreasing as the volume of the acid added increases. The final solution would be acidic as it contains not only water and $\text{KNO}_3 (aq)$ , but some $\text{HNO}_3$ as well. Bromothymol blue would therefore demonstrates a yellow color, the color it present in an acidic solution, at the end of the titration.

5 0

3 years ago

A pressure cooker contains 5.68 L of air at a temperature of 390 4K if the absolute pressure of the air in the pressure cooker i

Cloud [144]

Answer:

3.59x10⁻⁴ mol

Explanation:

Assuming ideal behaviour we can solve this problem by using the<em> PV=nRT formula</em>, where:

P = 205 Pa

V = 5.68 L

n = ?

R = 8314.46 Pa·L·mol⁻¹·K⁻¹

T = 390.4 K

We<u> input the data given by the problem</u>:

205 Pa * 5.68 L = n * 8314.46 Pa·L·mol⁻¹·K⁻¹ * 390.4 K

And <u>solve for n</u>:

n = 3.59x10⁻⁴ mol

6 0

3 years ago

What does a bond do?

frozen [14]

Answer:

chemical substances being held together by attraction of atoms to each other through sharing, as well as exchanging, of electrons -or electrostatic forces.

Explanation:

I hope this helps

5 0

3 years ago