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3 years ago

17 POINTS (SERIOUS ANSWER ASAPP)

Chemistry

1 answer:

katovenus [111]3 years ago

6 0

I think the answer is C. Hope this helped.

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H2(g) + Co(g) _CH3OH<br> balance the equation <br>

Tom [10]

Answer:

CO + 2H2 = CH3OH

Explanation:

1. Label Each Compound With a Variable

aCO + bH2 = cCH3OH

2. Create a System of Equations, One Per Element

C: 1a + 0b = 1c

O: 1a + 0b = 1c

H: 0a + 2b = 4c

3. Solve For All Variables (using substitution, gauss elimination, or a calculator)

a = 1

b = 2

c = 1

4. Substitute Coefficients and Verify Result

CO + 2H2 = CH3OH

L R

C: 1 1 ✔️

O: 1 1 ✔️

H: 4 4 ✔️

8 0

2 years ago

Which of the following is an example of chemical energy being released or stored?

Monica [59]

Answer:

Explanation:

When something is chemical it is warped into a completely new substance and when coal is burned it is new so it is definitely C.

7 0

3 years ago

Help me please.. dont understand

dedylja [7]

When gases get cooler the molecules slow down or lose energy and condense so the volume in the tire or soccer ball would decrease and may feel flatter

4 0

3 years ago

The wavelength idea of the wave-mechanical model refers to what?

Virty [35]

<span> The wave idea derives from the electrons' behavior about the nucleus of an atom, and it follows Heisenberg's Uncertainty Principle and draws away from Bohr's planetary model of the atom.</span>

6 0

3 years ago

4. The mass of a silver liberty (coin) was measured three times and each measurement was made

Vaselesa [24]

Answer:

The average mass of the gold coin reported to five significant figures, even though you had to divide by "3" to obtain the average.

Explanation:

Given that,

The mass of a silver liberty was measured three times and each measurement was made to five digits.

The mass values are,

$m_{1}=12.519\ g$

$m_{2}=12.521\ g$

$m_{3}=12.496\ g$

The average mass of the gold coin is 12.512 g.

We know that,

Significant figures :

Significant figures is explained the nonzero, leading zero and zeros between two nonzero digits.

For example,

The digits is 0.003405

In the digit, 345 = nonzero

0.00 = leading zero

The average mass of the gold coin reported to five significant figures because average mass is 12,512. All digits are nonzero.

Nonzero digit are significant.

Hence, The average mass of the gold coin reported to five significant figures, even though you had to divide by "3" to obtain the average.

7 0

3 years ago