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3 years ago

A t-test is suitable for

Chemistry

1 answer:

blagie [28]3 years ago

7 0

Answer:

Explanation:

A t-test is a type of inferential statistic used to determine if there is a significant difference between the means of two groups, which may be related in certain features. The t-test is one of many tests used for the purpose of hypothesis testing in statistics. Calculating a t-test requires three key data values.

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Which statement best explains why radon and krypton do not bond easily with other elements

Gnesinka [82]

If you take a look in the periodic table, radon and krypton are noble gases, and noble gases are unreactive elements because their valence electrons are full, they hardly give out or share electrons.

5 0

3 years ago

Read 2 more answers

The pain reliever morphine contains 17.900 g C, 1.680 g H, 4.225 g O, and 1.228 g N. Determine the empirical Formula.

JulijaS [17]

Answer: The empirical formula is $C_{17}H_{19}O_3N$

Explanation:

Mass of C= 17.900 g

Mass of H = 1.680 g

Mass of O = 4.225 g

Mass of N = 1.228 g

Step 1 : convert given masses into moles.

Moles of C = $\frac{\text{ given mass of C}}{\text{ molar mass of C}}= \frac{17.990g}{12g/mole}=1.5moles$

Moles of H = $\frac{\text{ given mass of H}}{\text{ molar mass of H}}= \frac{1.680g}{1g/mole}=1.680moles$

Moles of O = $\frac{\text{ given mass of O}}{\text{ molar mass of O}}= \frac{4.225g}{16g/mole}=0.264moles$

Moles of N = $\frac{\text{ given mass of N}}{\text{ molar mass of N}}= \frac{1.228g}{14g/mole}=0.087moles$

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For C = $\frac{1.5}{0.087}=17$

For H = $\frac{1.680}{0.087}=19$

For O = $\frac{0.264}{0.087}=3$

For N = $\frac{0.087}{0.087}=1$

The ratio of C : H: O: N = 17: 19: 3: 1

Hence the empirical formula is $C_{17}H_{19}O_3N$

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3 years ago

If you start with 3 moles of sodium and 3 moles of chlorine to produce sodium chloride, what is the limiting reagent?(You will n

Phoenix [80]

Answer:

B. Na

Explanation:

Once balanced you get 2Na + Cl₂ ⇒ 2NaCl. Sodium is the limiting reagent because it would produce the smallest amount of the product (NaCl)–while chlorine is the excess reagent. Based off of the Na in the balanced equation, it would produce 3 moles of NaCl, and for Cl₂ it would produce an excess of 6 moles of NaCl. [It'd be wise to utilize stoichiometric factors to get a good grasp of this]

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3 years ago

Question 13 of 25

Free_Kalibri [48]

Answer:C. Some chemicals cause cancer, whereas others have been

designed to fight it.

Explanation: Exposure to casinogens can lead to cancer this are chemicals also some chemicals(drugs) have been developed to combat the effect of cancerous cells. Hence the relationship between cancer and chemicals

4 0

3 years ago

Chemical reactions can be detected by: _________

Alja [10]

(A) Color changes from reactant to products.

The rate of a chemical reaction is calculated by dividing the rate of change in a reactant or product's concentration by the coefficient from the equation's balanced state.

2N2O5(g) → 4NO2(G) + O2(g)

A change in color and the appearance of bubbles are two indications of a chemical shift.In a chemical process, the makeup of the components changes; in a physical change, the appearance, smell, or straightforward exhibition of a sample of matter changes without changing its composition.

Despite the fact that we refer to them as physical "reactions," nothing is actually changing. A change in the substance in question's elemental composition is necessary for a reaction to occur. Therefore, from now on, we will simply refer to bodily "reactions" as physical changes.

Physical modifications must only cause a variation in display without altering the composition. Typical modifications include, but are not limited to:

Texture\Color\Temperature\Shape

learn more about Chemical reactions: brainly.com/question/16416932

#SPJ4

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2 years ago