All categories

3 years ago

How do scientists think that gravity affected the formation of our solar system?

Chemistry

1 answer:

Makovka662 [10]3 years ago

5 0

Maybe because gravity has control of each formation of the solarsydtem thats why its just a guess

You might be interested in

Deposition is a ________________ changing into a ____________________. 1. liquid, solid 2. solid, gas 3. gas, solid 4. liquid, g

ella [17]

Answer:

3. Gas, solid

Explanation:

Deposition is the process of gas changing directly to a solid. It skips the liquid state.

5 0

3 years ago

I'll mark brainliest.....

Ilya [14]

P = 203
V = 10
n = ?
R = 8.31
T = 298
$PV = nRT \\ 203(10) = n(8.31)(298) \\ 2030 = 2476.38n \\ n = \frac{2030}{2476.38} = 0.819 mol$

5 0

3 years ago

How many miles are there if you have 70.5g of Nacl

GenaCL600 [577]

70.5g x 1 mol / 58.5g = 1.2mol of nacl

4 0

3 years ago

En el laboratorio, un vaso precipitado vacío tiene una masa de 0,50 kg. Este vaso se llena con 300 cm3 de una solución saturada

faust18 [17]

Answer:

Density = 0.0007667 Kg/cm³

Explanation:

Given the following data;

Mass of empty beaker = 0.50 kg

Volume of solution = 300 cm³

Mass of glass+solution = 730 g

To find the density of the solution in the glass;

First of all, we would convert the value in grams to kilograms.

Conversion:

1000 grams = 1 kg

730 = X kg

Cross-multiplying, we have;

X = 730/1000 = 0.73 kg

Next, we would determine the mass of the solution.

Mass of solution = Mass of glass+solution - Mass of empty beaker

Mass of solution = 0.73 - 0.50

Mass of solution = 0.23 kg

Lastly, we would solve for the density of the solution;

Density can be defined as mass all over the volume of an object.

Simply stated, density is mass per unit volume of an object.

Mathematically, density is given by the formula;

$Density = \frac {mass}{volume}$

Substituting into the formula, we have;

$Density = \frac {0.23}{300}$

Density = 0.0007667 Kg/cm³

4 0

3 years ago

Please help!!<br> I don’t understand

laiz [17]

<h3>Answer:</h3>

150 g Si

<h3>General Formulas and Concepts:</h3>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right<u> </u>

<u>Chemistry</u>

<u>Atomic Structure</u>

Reading a Periodic Table
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<u>Stoichiometry</u>

Use Dimensional Analysis

<h3>Explanation:</h3>

<u>Step 1: Define</u>

[Given] 3.2 × 10²⁴ atoms Si

[Solve] grams Si

<u>Step 2: Identify Conversions</u>

Avogadro's Number

[PT] Molar Mass of Si - 28.09 g/mol

<u>Step 3: Convert</u>

[DA] Set up: $\displaystyle 3.2 \cdot 10^{24} \ atoms \ Si(\frac{1 \ mol \ Si}{6.022 \cdot 10^{23} \ atoms \ Si})(\frac{28.09 \ g \ Si}{1 \ mol \ Si})$
[DA] Multiply/Divide [Cancel out units]: $\displaystyle 149.266 \ g \ Si$

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. Instructed to round to 2 sig figs.</em>

149.266 g Si ≈ 150 g Si

4 0

3 years ago