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Nastasia [14]
2 years ago
9

Which number below has a value between 6.6 and 6.7?

Mathematics
2 answers:
IceJOKER [234]2 years ago
5 0

Answer:

C

Step-by-step explanati

goblinko [34]2 years ago
4 0

Answer:

C. =6.633

Step-by-step explanation:

You might be interested in
What is the mass of 2.5 moles of carbon dioxide?
GarryVolchara [31]

Answer:

110 grams

Step-by-step explanation:

CO2 molecule is made up of Carbon (atomic mass =12) and oxygen (atomic mass=16).

So first finding the mass of 1 molecule of CO2 which is equals to

= mass of 1 carbon atom + masses of 2 oxygen atom, we get

= 12+(16*2)= 12+32= 44 a.m.u.

Now 1 molecule of CO2 has mass 44 amu so mass of 1 mole CO2 will be 44 grams.( 1 a.m.u.=1.6729*10^-33 grams. 1 mole = 6.022*10^23, so 44 a.m.u.=73.6076*10^-33 grams approx. For one mole CO2, 73.6076*10^-33*6.022*10^23 which is approximately equals to 44 grams. )

1 mole CO2= 44grams, so 2.5 moles = 44*2.5= 110 grams

So our answer is 110 grams.

lowkey hope this helped you, good luck whatever you need it for Imaooo

3 0
2 years ago
He sum of two numbers, x and y, is 12. the difference of x and two times y is 6. what are the values of x and y? x = 8, y = 4 x
Sveta_85 [38]
The last choice is correct
8 0
2 years ago
Ryan is planning a party for 138 people.Paper plates are sold in packs of twelve.How many packs of paper does ryan need to buy s
Artyom0805 [142]

Divide the number of people by the number of plates per pack:

138 / 12 = 11.5

He need to buy 12 packs of plates to have enough.

6 0
3 years ago
HHHEEELLLPP PLEASE!!!!!!!
Rasek [7]
T = How tall they are.
Robin = 180
His brother = x cm shorter
T = 180 - x
6 0
3 years ago
Find the value of 4x + 3y when x = 13 and y=9
Talja [164]

Answer:

79

Step-by-step explanation:

4(13)+3(9)

52+27

79

5 0
2 years ago
Read 2 more answers
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