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s2008m [1.1K]
3 years ago
11

How many atoms of F are in the following formula: 3BaF2 1) 6 2) 3 3) 2 4) 5

Chemistry
1 answer:
Helen [10]3 years ago
3 0

Answer:

There are 6 atoms

Explanation:

2 from the subscript and multiply it by 3 cause of the coefficient.

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What is the temperature 51°C expressed in kelvins?
Evgesh-ka [11]

Answer:

The answer is

<h2>324 K</h2>

Explanation:

To express a given temperature in degree Celsius to Kelvin simplify add 273 to the given value

That's

<h3>K = 273 + °C</h3>

where

K = Kelvin

°C = value in degree Celsius

From the question the value to be converted is 51°C

It's equivalent in Kelvin is

K = 273 + 51

We the final answer as

<h2>324 K</h2>

Hope this helps you

4 0
3 years ago
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3 years ago
How many moles are in a solution with a concentration of 5 M and a volume of 0.25 L?
Otrada [13]

Answer:

160 mL

Explanation:

5 0
3 years ago
When the concentrations of CH 3 Br and NaOH are both 0.100 M, the rate of the reaction is 0.0030 M/s. What is the rate of the re
mash [69]

Answer : The rate of the reaction if the concentration of CH_3Br is doubled is, 0.006 M/s

Explanation :

Rate law : It is defined as the expression which expresses the rate of the reaction in terms of molar concentration of the reactants with each term raised to the power their stoichiometric coefficient of that reactant in the balanced chemical equation.

The balanced equations will be:

CH_3Br+NaOH\rightarrow CH_3OH+NaBr

In this reaction, CH_3Br and NaOH are the reactants.

The rate law expression for the reaction is:

\text{Rate}=k[CH_3Br][NaOH]

As we are given that:

[CH_3Br] = concentration of CH_3Br = 0.100 M

[NaOH] = concentration of NaOH = 0.100 M

Rate = 0.0030 M/s

Now put all the given values in the above expression, we get:

0.0030M/s=k\times (0.100M)\times (0.100M)

k=0.3M^{-1}s^{-1}

Now we have to calculate the rate of the reaction if the concentration of CH_3Br is doubled.

\text{Rate}=k[CH_3Br][NaOH]

\text{Rate}=(0.3M^{-1}s^{-1})\times (2\times 0.100M)\times (0.100M)

\text{Rate}=0.006M/s

Thus, the rate of the reaction if the concentration of CH_3Br is doubled is, 0.006 M/s

3 0
4 years ago
How<br> much heat must be added to<br> 85g<br> of water<br> to raise its temperature 225?
ki77a [65]

Answer:

One of water's most significant properties is that it takes a lot of heat to it to make it get hot. Precisely, water has to absorb 4,184 Joules of heat (1 calorie) for the temperature of one kilogram of water to increase 1°C.

Explanation:

7 0
3 years ago
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