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Darina [25.2K]
3 years ago
6

I think it’s D but I’m not sure.. Please help!

Chemistry
2 answers:
diamong [38]3 years ago
8 0

Answer:

D.

Explanation:

Weathering, erosion and deposition are processes that can wear a mountain down.

alisha [4.7K]3 years ago
7 0

Answer:   I think it’s D?

Explanation:

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Identify the products in the reaction HCI + NaOH → NaCl + H20.
Setler [38]
C the products are on the right side of the arrow
7 0
3 years ago
If 20.00 moles of KClO3 react, how many molecules of O2 will form?
Tanzania [10]

Answer:

Explanation:

2KClO₃ = 2KCl + 3O₂

2 moles of potassium chlorate gives 3 moles of oxygen gas

20 moles of potassium chlorate will give 30  moles of oxygen gas .

30 moles of oxygen = 30 x 6.02 x 10²³ molecules of oxygen .

= 180.6 x 10²³ molecules of O₂ .

6 0
3 years ago
Methane (CH4) reacts with Cl2 to yield CCl4 and HCl by the following reaction equation: CH4 + 4 Cl2 → CCl4 + 4HCl. What is the Δ
Vlad1618 [11]

Answer: The ΔH of the reaction if 51.3 g of CH_4 reacts with excess Cl_2 to yield 1387.6 kJ is 432.27kJ

Explanation:

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}

moles of CH_4

\text{Number of moles of methane}=\frac{51.3g}{16g/mol}=3.21moles

CH_4+4Cl_2\rightarrow CCl_4+4HCl   \Delta H=?

As Cl_2 is present in excess, CH_4 is the limiting reagent as it limits the formation of product.

If 3.21 moles of methane releases heat = 1387.6 kJ

Thus 1 mole of methane release=\frac{1387.6}{3.21}\times 1=432.27kJ

4 0
3 years ago
Help pleaseeee
Step2247 [10]

Answer:

0.337 dm³

Explanation:

M(K2CO3) = 138.2 g/mol

1) 11.7 g * (1 mol/138.2 g) =0.08466 mol

2) 0.08466 mol * (1 dm³/0.25 mol) = 0.3386 dm³ ≈ 0.337 dm³

4 0
3 years ago
if 3.07 mil of an ideal gas has a pressure of 2.91 atm and a volume of 78.13 liters, what is the temperature of the sample in ce
emmasim [6.3K]

Answer:

\large \boxed{\text{629 $^{\circ}$C}}

Explanation:

We can use the Ideal Gas Law and solve for T.

pV = nRT

Data  

p = 2.91 atm

V = 78.13 L

n = 3.07 mol

R = 0.082 06 L·atm·K⁻¹mol⁻¹

Calculations

\begin{array} {rcl}pV & = & nRT\\\text{2.91 atm} \times \text{78.13 L} & = & \rm\text{3.07 mol} \times 0.08206 \text{L}\cdot\text{atm}\cdot\text{K}^{-1}\text{mol}^{-1} \times T\\227.4&=&0.2519T\text{ K}^{-1}\\T& = &\dfrac{227.4}{\text{0.2519 K}^{-1}}\\\\ & = & \text{902.5 K}\\\end{array}\\T = \text{(902.5 - 273.15) $^{\circ}$C} = \large \boxed{\textbf{629 $^{\circ}$C}}

3 0
3 years ago
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