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3 years ago

13

______ is a chemical reaction between an acid and a base that forms a salt and water. Group of answer choices Neutralization Dis

sociation Titration Ionization

1 answer:

viva [34]3 years ago

7 0

Answer:

neutralization

Explanation:

this is because

acid + base ---> salt + water

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The amount of oxygen in the reactants is 4 atoms. In the products, the oxygen is distributed to water (H2O) and O2 gas. Which co

Reil [10]

Answer:

2 in front of water and 1 in front of oxygen

Explanation:

This question is describing balancing a chemical reaction. A balanced chemical reaction has the same number of atoms of each elements on both the reactant and product side. According to the question, the reactants contains 4 atoms of oxygen. The reactants give rise to water (H20) and O2 in the products side.

This reaction is most likely the decomposition of hydrogen peroxide (H2O2) as follows:

H2O2 (l) ----> H2O (l) + O2(g)

Based on the description, H2O2 will be 2H2O2 as it is said to contain four atoms of oxygen. This means that, in order to have a balanced equation, we must place coefficient 2 in front of water and coefficient 1 in front of oxygen. That is;

2H2O2 (l) ----> 2H2O (l) + O2(g)

6 0

3 years ago

Read 2 more answers

How much energy is released when the correct number of protons and neutrons come together to form deuterium? a) 0.52 MeV b) 1.7

irga5000 [103]

<u>Answer:</u> The correct answer is 2.24 MeV.

<u>Explanation:</u>

The chemical reaction for the formation of deuterium from proton and neutron follows:

$_{1}^1\textrm{H}+_0^1\textrm{n}\rightarrow _1^2\textrm{H}$

We are given:

Mass of $_{1}^{1}\textrm{H}$ = 1.00784 u

Mass of $_{0}^{1}\textrm{n}$ = 1.008665 u

Mass of $_{1}^{2}\textrm{H}$ = 2.014102 u

To calculate the mass defect, we use the equation:

$\Delta m=\text{Mass of reactants}-\text{Mass of products}$

$\Delta m=(m_{_1^2H}+m_{n})-(m_{_1^2H})\\\\\Delta m=(1.00784+1.008665)-(2.014102)=0.002403u$

To calculate the energy released, we use the equation:

$E=\Delta mc^2\\E=(0.002403u)\times c^2$

$E=(0.002403u)\times (931.5MeV)$ (Conversion factor: $1u=931.5MeV/c^2$ )

$E=2.24MeV$

Hence, the energy released in the given nuclear reaction is 2.24 MeV.

5 0

3 years ago

Find the kinetic energy of an electron whose de broglie wavelength is 34.0 nm.

dezoksy [38]

The De Broglie wavelength of the electron is
$\lambda=34.0 nm=34 \cdot 10^{-9} m$
And we can use De Broglie's relationship to find its momentum:
$p= \frac{h}{\lambda}= \frac{6.6 \cdot 10^{-34} Js}{34 \cdot 10^{-9} m}=1.94 \cdot 10^{-26} kg m/s$

Given $p=mv$ , with m being the electron mass and v its velocity, we can find the electron's velocity:
$v= \frac{p}{m}= \frac{1.94 \cdot 10^{-26} kgm/s}{9.1 \cdot 10^{-31} kg}= 2.13 \cdot 10^4 m/s$

This velocity is quite small compared to the speed of light, so the electron is non-relativistic and we can find its kinetic energy by using the non-relativistic formula:
$K= \frac{1}{2}mv^2= \frac{1}{2}(9.1 \cdot 10^{-31} kg)(2.13 \cdot 10^4 m/s)^2=2.06 \cdot 10^{-22} J$

3 0

3 years ago

Answer my question plzz !!<br>any body

Mice21 [21]

Answer:

The height is 80 meters.

Explanation:

The equation for the distance in the second segment of the fall is as below. In it, we use the initial velocity v1 that the ball had after completing the first segment. From this equation, v1 can be determined:

$h_2 = \frac{1}{2}gt_2^2+v_1t_2=0.5\cdot 10\frac{m}{s^2}\cdot 4 s^2+v_1\cdot 2 s=60m\implies\\v_1 = 20\frac{m}{s}$

Next, we use the kinematic equation for velocity at the end of the first segment of a free fall, to determine h1:

$v_1^2 = 2gh_1+v_0^2 = 2gh_1\implies h_1 = \frac{v_1^2}{2g}=20m$

The total height is then

$h = h_1 + h_2 = 20m + 60 m = 80m$

4 0

4 years ago

What feature will form as a result of the movement displayed in this illustration?

11111nata11111 [884]

A convergent boundary is correct

7 0

3 years ago

Read 2 more answers