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iragen [17]
1 year ago
9

A balance and a graduated cylinder are used to determine the density of a mineral sample. The sample has a mass of 16 g and a vo

lume of 2 cm3. What is the density of the mineral sample?
Chemistry
1 answer:
Ludmilka [50]1 year ago
6 0

Answer:

8g/cm³

Explanation:

density is mass per unit volume , it is measured in grams per unit volume

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Alenkasestr [34]

Answer:

helium (c

Explanation:

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6 0
3 years ago
How many moles are in 281 g of Ca(OH)2?
Natasha_Volkova [10]

Answer:

3.79 moles

Explanation:

To convert moles to gams of a substance we need to find the molar mass of the substance. For Ca(OH)₂ th molar mass is:

1Ca = 40.08g/mol

2O = 2*16g/mol = 32g/mol

2H = 2*1.01g/mol = 2.02g/mol

The molar mass is:

40.08g/mol + 32g/mol + 2.02g/mol = <em>74.1g/mol</em>

<em />

And moles are:

281g * (1mol / 74.1g) =

<h3>3.79 moles</h3>
5 0
3 years ago
Why do some transition metals have multiple oxidation states? Select the correct answer from each drop down menu
Vlad [161]

Answer:

Transition metals can have multiple oxidation states because of their electrons. The transition metals have several electrons with similar energies, so one or all of them can be removed, depending the circumstances. This results in different oxidation states. please mark me as brainellist

4 0
3 years ago
david’s mom wants to calculate how much it will cost to drive from los angeles, ca, to san francisco, ca. gas costs $4.00 a gall
grin007 [14]
She needs to know the distance from LA to SF.

Call that distance x. Then you can calculate the cost from:

# of gallons consumed: x miles / 38 miles/ gallon = (x/38) gallons

After that,

cost = # gallons * cost per gallon = (x/38) gallons * 4 $/gallon = 4x/38 $ 
3 0
3 years ago
Read 2 more answers
How many oxygen molecules are required for glycolysis
morpeh [17]

Answer:

0

Explanation:

glycolysis requires no oxygen

6 0
3 years ago
Read 2 more answers
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