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Ad libitum [116K]
2 years ago
6

What is density? What does it tell you about the substance?

Chemistry
2 answers:
olya-2409 [2.1K]2 years ago
7 0
How heavy the object is.
Y_Kistochka [10]2 years ago
4 0
The density<span> of a </span>substance<span> is the relationship between the mass of the substance </span><span>and how much space it takes up (volume). The mass of atoms, their size, and how they are arranged </span>determine<span> the </span>density<span> of a </span>substance<span>. </span>Density<span> equals the mass of the </span>substance<span> divided by its volume; D = m/v.</span>
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The purpose of photosynthesis is to produce usable chemical energy or glucose from solar energy. If the formula for glucose is C
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#1 is 6

#2 During chemistry lab, Mrs. Black’s students placed an antacid tablet in a zip lock bag. They recorded the mass of the tablet in the bag. Then they carefully added 50 grams of water and quickly sealed the bag. The tablet began to fizz and soon disappeared. The bag was filled with gas and it felt cold to the touch.

4 0
3 years ago
An ideal gas in a 1.25-gallon container is at a temperature of 125 degrees Celsius and pressure of 2.5 atmospheres. If the gas i
Tresset [83]
You will need the equation PV = nRT

P = Pressure in kPa
V = Volume in L
n = moles
R = 8.314 (constant)
T = Temperature in Kelvin 

First convert 2.5 atm into kPa:

2.5 X 101.3 = 253.25 kPa

Convert 125 Celsius into Kelvin:

125 + 273 = 398 K

Convert Gallons to Litres:

1.25  X 3.79 = 4.74 L

Plug your values into the equation to solve for n:

(253.25)(4.74) = n(8.314)(398)

n = (253.25)(4.74)/(8.314)(398)

n = 0.362 moles

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M = Molar Mass 
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32 = m/(0.362)

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8 0
3 years ago
The Law of Superposition states
lora16 [44]
In an undisturbed sequence of layers of rocks, the younger layers lie on top of the older layers
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3 years ago
How many formula units are there in 212 grams of mgCl2
AleksandrR [38]

Formula units are there in 212 grams of MgCl₂ are 830.56

Formula is the empirical of any ionic or covalent network solid compound used as an independent entity for stoichiometric calculations and it is the lowest whole number ratio of ions represented in an ionic compound

Here given data is

MgCl₂ = 212 grams

1 mole of magnesium chloride has mass = 95.211 gram and contains 6.022×10²³formula units of magnesium chloride

Here 212 grams×6.022×10²³form unit of MgCl₂/95.211 gram = 830.56

Know more about magnesium chloride

brainly.com/question/22727305

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4 0
9 months ago
0.315 to scientific notation
irga5000 [103]

Answer:

3.15 × 10^-1

or

3.15E-1

Explanation:

7 0
3 years ago
Read 2 more answers
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