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Arte-miy333 [17]
3 years ago
10

What kind of decay cause neptunium -238 to form from uranium -238

Chemistry
1 answer:
lakkis [162]3 years ago
3 0

After 30 years, about 4.7% of the americium atoms will have decayed to neptunium. Plutonium-239 is itself the primary fissile isotope of plutonium (used in nuclear weapons), and is in turn made from uranium.

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What organic product would you expect from the reaction of ethylmagnesium bromide (CH3CH2MgBr) with H2O.
tatyana61 [14]

Answer:

It would produce ethane (CH₃CH₃)

Explanation:

Ethylmagnesium bromide (CH₃CH₂MgBr) is a Grignard's reagent.

It is a highly reactive substance, and as any alkylmagnesium bromide

(R-CH₂MgBr) it reacts with water to produce an alkane (R-CH₃). R stands for any carbon structure bonded to that functional group.

5 0
3 years ago
How many grams of phosphorus are in 500.0 grams of calcium phosphide? (i need the work also)
kvv77 [185]

Answer:

\boxed{\text{170.0 g P}} 

Explanation:

The formula of calcium nitride is Ca₃P₂.

The masses of each element are:

\begin{array}{lrcr}\text{3Ca:} & 3 \times 40.08&=& \text{120.24 u}\\\text{2P:} & 2\times 30.97&=& \text{61.94 u}\\& \text{TOTAL} & = & \text{182.18 u}\\\end{array}

So, there are 61.94 g of P in 182.18 g of Ca₃P₂.

In 500 g of Ca₃P₂:

\text{Mass of P} = \text{500.0 g Ca$_{3}$P$_{2}$} \times \dfrac{\text{61.94 g P}}{\text{182.18 g Ca$_{3}$P$_{2}$}} = \text{170.0 g P}

There are \boxed{\textbf{170.0 g P}} in 500.0 g of Ca₃P₂.

3 0
3 years ago
What is oxidized and what is reduced in this reaction?
sineoko [7]
N⁻²2H4(l) + 2H2O⁻¹2(l) → N⁰2(g) + 4H2O⁻²(g)

N is oxidized and O is reduced

6 0
3 years ago
How many grams are in 4.3 x 10 -4 moles of calcium phosphate?
attashe74 [19]

Explanation:

Ca3(PO4)2 1 mole has 310.2 g

Ca3(PO4)2 4.3 × 10^-4 moles has 4.3 × 10^-4 × 310.2

= 1,333.86 × 10^-4

= 1.334 × 10^-1

OR 0.1334 g

5 0
3 years ago
The volume of a sample of water is 2.5 milliliters (mL). The volume of this sample in liters (L) is
Masteriza [31]

Answer:

2.5 Times . 10–3 L.

Explanation:

1 L = 1000 mL

1 mL = 1×10⁻³ L

2.5 mL / 1000 = 2.5×10⁻³ L

2.5 mL . 1×10⁻³ = 2.5×10⁻³ L

8 0
3 years ago
Read 2 more answers
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