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3 years ago

PLEASE HELP I WILL NAME BRAINLIEST TO WHOEVER GETS IT RIGHT!!!

Chemistry

2 answers:

Lemur [1.5K]3 years ago

7 0

100 feet
when you use the force's formula to calculate it, the force exerted by 100 feet will be greater than 50 feet.

Nana76 [90]3 years ago

5 0

100 feet.

Here’s my point of view: okay so consider it, this water balloon... is dropped 50 feet. It hits you. It is definitely gonna hurt but let’s consider 100 feet. Fifty feet won’t hurt near as bad because the balloon dropped at one hundred feet has more time on the way down to gain speed. Here is our answer. Just as with a car... the faster it’s going, the more impact it will make on whatever it hits. SPEED AND FORCE are my two words I want to highlight.

I really hope this helps you understand. Have a great evening.
~Brooke

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A chemical reaction was used to produce 2.54 moles of copper(II) bicarbonate, Cu(HCO3)2. What mass of copper(II) bicarbonate was

emmainna [20.7K]

Answer:

The answer to your question is 471.2 g

Explanation:

Data

moles of Cu(HCO₃)₂ = 2.54

mass of Cu(HCO₃)₂ = ?

Process

1.- Calculate the molar mass of Copper (II) bicarbonate

Cu(HCO₃)₂ = (1 x 63.5) + (2 x 1) + (2 x 12) + (6 x 16)

= 63.5 + 2 + 24 + 96

= 185.5 g

2.- Use proportions and cross multiplication to find the mass

185.5 g of Cu(HCO₃)₂ ------------- 1 mol

x ------------- 2.54 mol

x = (2.54 x 185.5) / 1

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5 0

2 years ago

A student weighed 0.550 g of lithium chloride, LiCl, to use in a reaction. How many moles is this? a. 5.11 b. 42.39 c. 23.31 d.

bixtya [17]

Answer:

<h2>The answer is option e</h2>

Explanation:

To find the number of moles we must first find the molar mass of LiCL

From the question

mass = 0.550g

M(Li) = 6 Cl = 35.5

Molar mass of LiCL = 6 + 35.5 = 41.5 g/mol

Then we use the formula

$n = \frac{m}{M}$

where

n is the number of miles

m is the mass

M is the molar mass

So we have

$n = \frac{0.550}{41.5}$

We have the final answer as

Hope this helps you

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3 years ago

Suppose a student completes an experiment with an average value of 2.6 mL and a calculated standard deviation of 0.80 mL. What i

DaniilM [7]

Answer:

Explanation:

1 standard deviation range will look like: [average - SD, average + SD]

Here the miximum value will be: average - SD = 2.6 - 0.80 = 1.80 ml

and the maximum value will be: average + SD = 2.6 + 0.80 = 3.40ml

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2 years ago

A hypothesis wich appears to be verified by multiple experiments and or researchers may become a

Westkost [7]

A hypothesis which appears to be verified by multiple experiments/researchers may become a theory

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3 years ago

A wave has 9.2 x 10-22 ) of energy. What is its wavelength?

blagie [28]

Answer:

$\lambda=2.2x10^{-4}m$

Explanation:

Hello!

In this case, since the relationship between energy and wavelength is defined via the speed of light and the Planck's constant as shown below:

$e=\frac{c*h}{\lambda}$

Since c stands for the speed of light and h for the so-called Planck's constant, we can compute the wavelength as follows:

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Best regards!

3 0

2 years ago