How can you read a determine the masses

Answers

Answer 1

Answer: I need you to explain the question

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Write this number in standard notation.
1.986 x 10negative exponent 6 or 1.986 x 10^6

Answers

Answer:

$0.000001986$

Explanation:

We have the number $1.986*10^(-6)$ . Standard notation would basically be this number without the $10^(-6)$ part.

To get rid of this part, we need to move the decimal point 6 places to the left (we go left because it's negative 6, indicating division).

So, when we move the decimal point 6 places to the left, the resulting number is: $0.000001986$ , with 5 zeros after the decimal point before a nonzero number.

Thus, the answer is $0.000001986$ .

Name the 5 types of chemical reactions

Answers

There are way more than 5 but I will list the ones I know:

Reaction with acid

Reaction with water

Combustion/Flammability

Combination

Redox

Isomerization

Balance the following equations:__CuS2 + HNO3 →

__Cu(NO3)2 + __H2SO4 +

__N2O + ___H20

Answers

Answer:

50CuS2 + 260HNO3 = 50Cu(NO3)2 + 100H2SO4 + 80N2O + 3H2O

Explanation:

Write the pressure equilibrium constant expression for this reaction. 2CO2 (g) + 4H2O (g) → 2CH3OH (l) + 3O2 (g)

Answers

Answer:

The pressure equilibrium constant (Kp) = (P O₂)³/(P CO₂)²(P H₂O)⁴.

Explanation:

For the reaction:

2CO₂ (g) + 4H₂O (g) → 2CH₃OH (l) + 3O₂ (g).

The pressure equilibrium constant (Kp) = the product of the pressure of the products side components / the product of the pressure of the reactantss side components.

each one is raised to a power equal to its coefficient.

∴ The pressure equilibrium constant (Kp) = (P O₂)³/(P CO₂)²(P H₂O)⁴.

Name two landforms created from deposits by rivers.

Answers

Alluvial fans and deltas are formed.

80cm^3 of oxygen gas diffused through a porous hole in 50 seconds how long wiil it take 120cm^3 of nitrogen (iv) oxide to diffuse through the same hole at the same conditions ?

Answers

Answer: it will take 89.93secs

Explanation:Please see attachment for explanation

Other Questions

Ok another chemistry question! This is another question that I can)t solve

I don’t get it? haha

11.5 grams of sodium metal are placed in a container with excess chlorine gas. Once the reaction is complete, 29.0 grams of sodium chloride are measured. What mass, in grams, of chlorine gas reacted?

A gas is 90.82L at 29.8 atm and 99.9°C. What volume would the gas be at standard temperature and pressure.