Please choose the answer that describes the Scientific notation of 5,089,000

In a vacuum, with no air resistance, how do 2 objects of different weights compare when falling?

viva [34]

Answer

hope it helps

Explanation:

In real life, heavier objects sometimes fall faster than light objects, but not because of gravity. Gravity makes all objects increase their speed at the same rate, regardless of how big they are. But if you drop 2 things outside, the air molecules may slow down one thing more than another.

7 0

4 years ago

The following reaction was performed in a sealed vessel at 791 ∘C : H2(g)+I2(g)⇌2HI(g) Initially, only H2 and I2 were present at

OlgaM077 [116]

Answer:

4.31 × 10²

Explanation:

Equation of the reaction;

$H_{2(g)} + I_{2(g)}$ ⇌ $2HI_{(g)$

The ICE Table is shown as follows:

$H_{2(g)}$ $+$ $I_{2(g)}$ ⇌ $2HI_{(g)$

Initial 3.10 2.50 0

Change - x -x + 2x

Equilibrium (3.10 - x) 0.0800 2x

From $I_{2(g)}$ ;

We can see that 2.50 - x = 0.0800

So; we can solve for x;

x = 2.50 - 0.0800

x = 2.42

$H_{2(g)}$ which = (3.10 -x) will be :

= 3.10 - 2.42

= 0.68

$2HI_{(g)$ = 2x

= 2 (2.42)

= 4.84

$K_c = \frac{[HI]^2}{[H_2][I_2]}$

$K_c = \frac{(4.84)^2}{(0.68)(0.0800)}$

$K_c =\frac{23.4256}{0.0544}$

$K_c =$ 430.62

$K_c$ ≅ 431

$K_c$ = 4.31 × 10²

6 0

3 years ago

What is the difference between a physical and a chemical property? (please hurry)

natulia [17]

Chemical and physical properties are ways that scientists classify a substance. The color or mass it has are physical properties. However, chemical properties are chemical changes a substance undergoes.

8 0

4 years ago

Read 2 more answers

What are the gas laws? (Include Boyle's law, charles's law, gay lussac's law, an avogadro's law) Could someone please summarize

Rina8888 [55]

Answer:

Boyle's Law: When the pressure of a gas increases, the volume of the gas will decrease as long as the temperature and amount of gas are constant.

So basically pressure is inversely proportional to Volume, when one increases, the other decreases, vice versa.

Equation: $P_{1} V_{1} = P_{2} V_{2}$

Charles Law: When the temperature of a gas increases, the volume of a gas will also increase if the pressure and amount of gas are constant.

So basically Temperature and volume are directly proportional.

Equation: $\frac{V_{1}}{T_{1}} = \frac{V_{2} }{T_{2} }$

Gay Lussac's Law: When the temperature of a gas increases, the pressure of a gas also increases when volume and the amount of gas remain constant.

Basically, Temperature and Pressure are directly proportional.

Equation: $\frac{P_{1}}{T_{1}} = \frac{P_{2} }{T_{2} }$