1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
stich3 [128]
3 years ago
12

How do birth and death rates affect a population size?

Chemistry
1 answer:
yawa3891 [41]3 years ago
3 0

Answer:

When the death rate is higher than the birth rate, the population decreases. It increases when the opposite happens.

Explanation:

You might be interested in
ANSWER NOW PLEASEEEEEEEEEEEEEEEEEEEE
klemol [59]
The answer is cell wall
8 0
3 years ago
If there is only one type of cation that can be formed from an element, what do we do with its name?
KatRina [158]

Answer:

Magnesium, Mgstart text, M, g, end text, is a group 2 element that will form 2+ cations. Because it usually forms cations of only one type, we don't need to specify its charge. We can simply refer to the cation in the ionic compound as magnesium. ... Therefore, the name for the compound is magnesium phosphide.

Explanation:

(this may or not be correct)

-also i finished that drawing you wanted :p-

6 0
3 years ago
BRAINLIESTTT ASAP!! PLEASE HELP ME ASAP!
Alexandra [31]

Answer:

Single displacement and reduction

Explanation:

In a single-displacement reaction, one element exchanges partners with another.

\rm Ca + 2H$_2$O $\longrightarrow$ Ca(OH)$_2$ + H$_2$

This is a single-displacement reaction, because the element Ca exchanges partners with H.

This is also a reduction/oxidation (redox) reaction, because the optically active of Ca increases from 0 to +2 (oxidation), while the oxidation number of H decreases from +1 to 0 (reduction),

The most common types of reactions are:

  • Combination
  • Decomposition
  • Single displacement
  • Double displacement
  • Reduction/oxidation
4 0
3 years ago
What is the minimum amount of 6.9 M H2SO4 necessary to produce 27.8 g of H2 (g) according to the following reaction? 2Al(s)+3H2S
Arte-miy333 [17]

Answer : The minimum amount of 6.9 M H_2SO_4 needed is, 2.0 L

Explanation :

The given chemical reaction is:

2Al(s)+3H_2SO_4(aq)\rightarrow Al_2(SO_4)_3(aq)+3H_2(g)

First we have to calculate the moles of H_2

\text{Moles of }H_2=\frac{\text{Mass of }H_2}{\text{Molar mass of }H_2}

Molar mass of H_2 = 2 g/mol

\text{Moles of }H_2=\frac{27.8g}{2g/mol}=13.9mol

Now we have to calculate the moles of H_2SO_4

From the balanced chemical reaction we conclude that,

As, 3 moles of H_2 produced from 3 moles of H_2SO_4

So, 13.9 moles of H_2 produced from 13.9 moles of H_2SO_4

Now we have to calculate the mass of H_2SO_4

\text{Concentration of }H_2SO_4=\frac{\text{Moles of }H_2SO_4}{\text{Volume of }H_2SO_4}

6.9M=\frac{13.9mol}{\text{Volume of }H_2SO_4}

\text{Volume of }H_2SO_4=2.0L

Thus, the minimum amount of 6.9 M H_2SO_4 needed is, 2.0 L

3 0
4 years ago
Which of the following item(s) explain the differences between the Ka values. Choose one or more: A. The oxidation state for oxy
Allisa [31]

Answer:

<em>C. The electron-withdrawing fluorine atoms pull electron density from the oxygen in trifluoroacetate. The negative charge is more stabilized in trifluoroacetate by this effect.</em>

<em></em>

Explanation:

<em>The structures of trifluoroacetate and acetic acid are both shown in the image attached.</em>

<em>The trifluoroacetate anion (CF3CO2-), just like the acetate anion has in the middle, two oxygen atoms.</em>

<em>However, in the trifluoroacetate anion, there are also three electronegative fluorine atoms attached to the nearby carbon atom attached to the carbonyl, and these pull some electron density through the sigma bonding network away from the oxygen atoms, thereby spreading out the negative charge further. This effect, called the "inductive effect" stabilizes the anion formed,the trifouoroacetate anion is thus more stabilized than the acetate anion.</em>

<em>Hence, trifluoroacetic acid is a stronger acid than acetic acid, having a pKa of -0.18.</em>

<em></em>

<u><em>Hope this helps!</em></u>

<u><em>Please mark brainliest!</em></u>

3 0
3 years ago
Other questions:
  • Which images show a container holding a heterogeneous mixture?
    9·2 answers
  • What are four ways you can separate mixture?
    10·2 answers
  • G vinegar is a solution of acetic acid in water. if a 165 ml bottle of distilled vinegar contains 28.2 ml of acetic acid, what i
    7·1 answer
  • Electronegativity tends to increase from left to right across a row, because A. the number of energy levels increases. B. the sh
    11·2 answers
  • What is the mass of 1.6x1020 molecules of carbon dioxide?
    7·1 answer
  • Is the color change in the Statue of liberty and physical or chemical change ​
    10·2 answers
  • Read the chemical equation. Fe2O3 + CO → Fe + CO2 If 2 moles of Fe2O3 react with 9 moles of CO, how many moles of each product a
    14·1 answer
  • When 3243. grams of iron (III) chloride are reacted with 511.8 grams of hydrosulfuric acid, which is the limiting reactant?
    9·1 answer
  • Why is there more black moths than white ones​
    7·1 answer
  • If you do not have a battery, you can get current to flow through a wire using a (n)
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!