Which type of fermentation sometimes occurs in people

Answers

Answer 1

Answer: lactic acid fermentation

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What is the meaning of Pangaea

Answers

It was the first continent, which later divided into 2, then more and more pieces, until we've got the continents of today.
Panthalassa was the ocean surrounding it those days.

It was actually what they named the one piece of continent that today is broken into 7 continents

How do you test a hypothesis using scientific inquiry

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Once you have constructed an effective hypothesis, the next step in the scientific inquiry process is to test the hypothesis through experimentation. This is a great opportunity for students to start a science notebook, if they have not yet started recording their progress. Steps to Identifying and Conducting an Appropriate Experiment to Test a Hypothesis 1) Present Hypotheses  Make a list of all potential hypotheses to be tested. 2) Make Predictions  For each hypothesis, ask what would be true if the hypothesis were true. 3) Write the Experimental Procedure  The experimental procedure is a step-by-step recipe for the science experiment. A good procedure contains enough detail that someone else could easily duplicate the experiment. Once you have formed a hypothesis, you will need to develop your experimental procedure to test whether your hypothesis is true or false. 4) Identify the Independent and Dependent Variables  The first step of designing the experimental procedure involves planning how to change the independent variable and how to measure the impact that this change has on the dependent variable. To guarantee a fair test when conducting the experiment, make sure that the only thing changing is the independent variable. All controlled variables must remain constant. 5) Design the Experiments  How can you identify an appropriate experiment that will effectively test your hypothesis? Begin by asking yourselves, “What can I do that will give me one result if my hypothesis is true, and a different result if my hypothesis is false?” Design at least one possible experiment for each hypothesis. Be sure that each experiment tests only one hypothesis.

How many atoms are there in 5.7 mol of Li?

Answers

Answer:Answer:

5.8

, where

Avogadro's Number,

6.022

⋅

−

Explanation:

And

5.8

⋅

6.022

⋅

−

What is the mass of this quantity of lithium atoms? Hint, 1 mole has a mass of

6.94

⋅

Explanation:

i hope this helps

Suppose 300 mL of 0.50 M lithium bromide solution and 300 mL of 0.70 M rubidium bromide solution are combined. What is the concentration of the bromide ion in the resulting solution?

Answers

Answer:

0.60 mol·L⁻¹

Explanation:

Data:

LiBr: c = 0.50 mol/L; V =300 mL

RbBr: c = 0.70 mol/L; V =300 mL

1. Calculate the moles of Br⁻ in each solution

(a) LiBr

$\text{Moles} = \text{0.300 L} * \frac{\text{0.50 mol}}{\text{1 L}} = \text{ 0.150 mol}$

(b) RbBr

$\text{Moles} = \text{0.300 L} * \frac{\text{0.70 mol}}{\text{1 L}} = \text{ 0.210 mol}$

2. Calculate the molar concentration of Br⁻

(a) Moles of Br⁻

n = 0.150 mol + 0.210 mol = 0.360 mol

(b) Volume of solution

V = 300 mL + 300 mL = 600 mL = 0.600 L

(c) Molar concentration

$c = \frac{\text{moles}}{\text{litres}} = \frac{\text{0.360 mol}}{\text{0.600 L}} = \textbf{0.60 mol/L}$

The concentration of Br ions in the resulting solution of LiBr and RbBr has been 0.6 M.

The addition of LiBr and RbBr has been dissociated into the equal moles of Li, Rb, and Br.

$\rm LiBr\;\rightarrow\;Li^+\;+\;Br^-$

$\rm RbBr\;\rightarrow\;Rb^+\;+\;Br^-$

Thus 1 mole of LiBr = 1 mole Br

1 mole RbBr = 1 mole Br.

The moles of LiBr in 0.5 M solution:

Molarity = $\rm moles\;*\;(1000)/(volume\;(ml))$

0.5 = $\rm moles\;*\;(1000)/(300\;ml)$

Moles of LiBr = 0.15 mol

The moles of Br from LiBr = 0.15 mol.

The moles of RbBr in 0.7 M solution:

Molarity = $\rm moles\;*\;(1000)/(volume\;(ml))$

0.7 = $\rm moles\;*\;(1000)/(300\;ml)$

Moles of RbBr = 0.21 mol

The moles of Br from RbBr = 0.21 mol.

The total moles of Br ions from LiBr and RbBr has been :

= 0.15 + 0.21

= 0.36 mol.

The total volume of the solution will be:

= 300 + 300 ml

= 600 ml.

The concentration of the Br ion has been:

Molarity = $\rm moles\;*\;(1000)/(volume\;(ml))$

Molarity of Br ions = $\rm 0.36\;*\;(1000)/(600\;ml)$

Molarity of Br ions = 0.6 M.

The concentration of Br ions in the resulting solution of LiBr and RbBr has been 0.6 M.

For more information about the concentration of the sample, refer to the link:

brainly.com/question/11804141

Use volume density and mass in the same sentence

Answers

Answer:

If mass remains the same while the volume of a substance increases, the density of the substance will decrease.

Explanation:

Why can hydrogen only form one covalent bond?

Answers

because its in group one....which only lose or gain electrons.....thus it will only have oneelectron to fulfill its octect rule

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