Estimate the product by rounding 2×6,254

Answers

Answer 1

Answer: 2 x 6,000=x(variable)

Solve

Answer 2

Answer:
If you round 6,254 to 6,000, and do the equation 2x6,000, then the estimated product of 2x6,254 would be 12,000.

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How many times does 50,000 go into 37,000,000

Answers

hello,

You do 37,000,000÷50,000=740 so you have to do 740x50,000=37,000,000.

Solve -r/4 < 8 A.r<-32
B. r. >-32
C.r < -2

D.r>-2

Answers

$(-r)/(4) <8\ /\cdot4\n\n-r<32\ /\cdot(-1)\n\nr>-32\ \ \ \Leftrightarrow\ \ \ x\ \in\ (-32;\ +\infty)$

$Ans.\ B$

Substitute these values in the combined variationequation F=G (m1m2)/d2
Then, solve for G: ___•10^___Nm2/kg2

Answers

Answer: F=6.67 x 10^21

G:6.67 x 10^ -11 N m2/kg2

Answer:

6.67 21

6.67 -11

1.30
10) How many grams are there in 3.30 x 10^23molecules of N216?
3

Answers

The number of grams in the given sample is 434.5 g.

What is molar mass?

Molar mass is the mass equivalent of Avogadro's number of atoms of an element, or Avogadro's number of molecules of in a chemical compound.

Given:

The number of molecules in the sample of N₂I₆ = 3.30 X 10²³

We need to find: the number of grams in the given sample,

One mole of a substance has exactly 6.022 X 10²³ elemental units. These elemental units can be molecules, ions, or atoms depending on the substance.

If 6.022 X 10²³ molecules of N₂I₆ constitute 1 mole of the substance,

Then 1 molecule will constitute 1/6.022 X 10²³ moles of the substance.

Therefore, 3.30 X 10²³ molecules of N₂I₆ will have 3.30 X 10²³ / 6.022 X 10²³ moles

= 3.300 / 6.022

= 0.55 moles

We know that the mass of 1 mole of a substance is equal to its molar mass.

The molar mass of N₂I₆ = 2 X Molar mass of N + 6 X Molar mass of I

= 2 X 14 + 6 X 127

= 28 + 762

= 790 g

Thus, 1 mole of N₂I₆ will weigh 790g

Therefore, 0.55 moles will weigh 790 X 0.55 g

= 434.5 g

Hence, the number of grams in the given sample is 434.5 g.

Learn more about molar mass, click;

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Answer:

433g

Step-by-step explanation:

3.3x10^23 ,olecules x lmol/ na molecules x 789.44,/ mol = 433g

What is the percent increase on 438,000 from 561,000

Answers

So, first you have to put the amount of decrease/increase over the original amount. (like a fraction!) then you are trying to find the percent so you would do x over 100. so it would look like; 438,000 x
----------- = -----
561,000 100
Then you would cross multiply (438,000 times 100 and 561,000 times x [which would be x]) and it would look like; 43,800,000 = 561,000x

(a shortcut for 0's is that if theres the same amount of them on each side just cross them out! It gives you the same amount every time!)

43,800=561x and finally you would divide 43,800 by 561 and your answer is 78.07%
Hope I helped! :)

(561000-438000)/438000 x 100%
=123000/438000 x 100%
=28,08 %

I need help on this assignment too. I need help

Answers

Answer. M=33c

He needs 35 blocks to make the igloo

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